From d5598cfa9bcab50812b2b416af91c2a37be67531 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:17 +0200 Subject: [PATCH 1/9] fdtdec: Allow using fdtdec_get_carveout() in loops In order make it possible to use fdtdec_get_carveout() in loops, return FDT_ERR_NOTFOUND when the passed-in index exceeds the number of phandles present in the given property. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- lib/fdtdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/fdtdec.c b/lib/fdtdec.c index af92e65bde..f2861eb395 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1431,7 +1431,7 @@ int fdtdec_get_carveout(const void *blob, const char *node, const char *name, if (len < (sizeof(phandle) * (index + 1))) { debug("invalid phandle index\n"); - return -FDT_ERR_BADPHANDLE; + return -FDT_ERR_NOTFOUND; } phandle = fdt32_to_cpu(prop[index]); From 4bf88ba76abb224b3ca258a2f502384ec6c86bd6 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:18 +0200 Subject: [PATCH 2/9] fdtdec: Support retrieving the name of a carveout When retrieving a given carveout for a device, allow callers to query the name. This helps differentiating between carveouts when there are more than one. This is also useful when copying carveouts to help assign a meaningful name that cannot always be guessed. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- board/nvidia/p2371-2180/p2371-2180.c | 2 +- board/nvidia/p2771-0000/p2771-0000.c | 2 +- board/nvidia/p3450-0000/p3450-0000.c | 2 +- include/fdtdec.h | 8 +++++--- lib/fdtdec.c | 12 ++++++++---- lib/fdtdec_test.c | 3 ++- 6 files changed, 18 insertions(+), 11 deletions(-) diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index 7423a97ad0..1f7aa0050c 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -128,7 +128,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index 508c4d27b7..aca86c3426 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -104,7 +104,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index e6b66966c1..7c1e75307f 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -127,7 +127,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, diff --git a/include/fdtdec.h b/include/fdtdec.h index 23efbe710c..f961f03012 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -1038,14 +1038,16 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, * * @param blob FDT blob * @param node name of a node - * @param name name of the property in the given node that contains + * @param prop_name name of the property in the given node that contains * the phandle for the carveout * @param index index of the phandle for which to read the carveout * @param carveout return location for the carveout information + * @param name return location for the carveout name * @return 0 on success or a negative error code on failure */ -int fdtdec_get_carveout(const void *blob, const char *node, const char *name, - unsigned int index, struct fdt_memory *carveout); +int fdtdec_get_carveout(const void *blob, const char *node, + const char *prop_name, unsigned int index, + struct fdt_memory *carveout, const char **name); /** * fdtdec_set_carveout() - sets a carveout region for a given node diff --git a/lib/fdtdec.c b/lib/fdtdec.c index f2861eb395..3ada77d80c 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1406,8 +1406,9 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, return 0; } -int fdtdec_get_carveout(const void *blob, const char *node, const char *name, - unsigned int index, struct fdt_memory *carveout) +int fdtdec_get_carveout(const void *blob, const char *node, + const char *prop_name, unsigned int index, + struct fdt_memory *carveout, const char **name) { const fdt32_t *prop; uint32_t phandle; @@ -1418,9 +1419,9 @@ int fdtdec_get_carveout(const void *blob, const char *node, const char *name, if (offset < 0) return offset; - prop = fdt_getprop(blob, offset, name, &len); + prop = fdt_getprop(blob, offset, prop_name, &len); if (!prop) { - debug("failed to get %s for %s\n", name, node); + debug("failed to get %s for %s\n", prop_name, node); return -FDT_ERR_NOTFOUND; } @@ -1442,6 +1443,9 @@ int fdtdec_get_carveout(const void *blob, const char *node, const char *name, return offset; } + if (name) + *name = fdt_get_name(blob, offset, NULL); + carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset, "reg", 0, &size, true); diff --git a/lib/fdtdec_test.c b/lib/fdtdec_test.c index e0c6e0971c..760aca2669 100644 --- a/lib/fdtdec_test.c +++ b/lib/fdtdec_test.c @@ -214,7 +214,8 @@ static int check_fdt_carveout(void *fdt, uint32_t address_cells, printf("carveout: %pap-%pap na=%u ns=%u: ", &expected.start, &expected.end, address_cells, size_cells); - CHECK(fdtdec_get_carveout(fdt, name, "memory-region", 0, &carveout)); + CHECK(fdtdec_get_carveout(fdt, name, "memory-region", 0, &carveout, + NULL)); if ((carveout.start != expected.start) || (carveout.end != expected.end)) { From 46cb067803bef50cb8a1334a56897d05b5f85e02 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:19 +0200 Subject: [PATCH 3/9] fdtdec: Support compatible string list for reserved memory Reserved memory nodes can have a compatible string list to identify the type of reserved memory that they represent. Support specifying an optional compatible string list when creating these nodes. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- arch/arm/cpu/armv8/fsl-layerscape/soc.c | 3 +- arch/riscv/lib/fdt_fixup.c | 2 +- board/nvidia/p2371-2180/p2371-2180.c | 5 +- board/nvidia/p2771-0000/p2771-0000.c | 5 +- board/nvidia/p3450-0000/p3450-0000.c | 5 +- include/fdtdec.h | 17 ++++-- lib/fdtdec.c | 69 ++++++++++++++++++++++++- lib/fdtdec_test.c | 4 +- lib/optee/optee.c | 1 + test/dm/fdtdec.c | 18 +++---- 10 files changed, 105 insertions(+), 24 deletions(-) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 41f3e95019..4f17c327af 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -54,7 +54,8 @@ int ls_gic_rd_tables_init(void *blob) lpi_base.start = addr; lpi_base.end = addr + size - 1; - ret = fdtdec_add_reserved_memory(blob, "lpi_rd_table", &lpi_base, NULL, false); + ret = fdtdec_add_reserved_memory(blob, "lpi_rd_table", &lpi_base, NULL, + NULL, 0, false); if (ret) { debug("%s: failed to add reserved memory\n", __func__); return ret; diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c index 61cf893526..7ac30a4f7c 100644 --- a/arch/riscv/lib/fdt_fixup.c +++ b/arch/riscv/lib/fdt_fixup.c @@ -75,7 +75,7 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst) pmp_mem.start = addr; pmp_mem.end = addr + size - 1; err = fdtdec_add_reserved_memory(dst, basename, &pmp_mem, - &phandle, false); + NULL, 0, &phandle, false); if (err < 0 && err != -FDT_ERR_EXISTS) { log_err("failed to add reserved memory: %d\n", err); return err; diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index 1f7aa0050c..58077255d0 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -128,7 +128,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, + NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -138,7 +139,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - &fb); + NULL, 0, &fb); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index aca86c3426..e35e6b6f48 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -104,7 +104,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, + NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -114,7 +115,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - &fb); + NULL, 0, &fb); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index 7c1e75307f..f16916460e 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -127,7 +127,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) struct fdt_memory fb; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL); + err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, + NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -137,7 +138,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - &fb); + NULL, 0, &fb); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/include/fdtdec.h b/include/fdtdec.h index f961f03012..5a6a7cbd99 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -995,7 +995,8 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * }; * uint32_t phandle; * - * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, &phandle, false); + * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, NULL, 0, &phandle, + * false); * * This results in the following subnode being added to the top-level * /reserved-memory node: @@ -1020,6 +1021,8 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * @param blob FDT blob * @param basename base name of the node to create * @param carveout information about the carveout region + * @param compatibles list of compatible strings for the carveout region + * @param count number of compatible strings for the carveout region * @param phandlep return location for the phandle of the carveout region * can be NULL if no phandle should be added * @param no_map add "no-map" property if true @@ -1027,6 +1030,7 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) */ int fdtdec_add_reserved_memory(void *blob, const char *basename, const struct fdt_memory *carveout, + const char **compatibles, unsigned int count, uint32_t *phandlep, bool no_map); /** @@ -1043,11 +1047,14 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, * @param index index of the phandle for which to read the carveout * @param carveout return location for the carveout information * @param name return location for the carveout name + * @param compatiblesp return location for compatible strings + * @param countp return location for the number of compatible strings * @return 0 on success or a negative error code on failure */ int fdtdec_get_carveout(const void *blob, const char *node, const char *prop_name, unsigned int index, - struct fdt_memory *carveout, const char **name); + struct fdt_memory *carveout, const char **name, + const char ***compatiblesp, unsigned int *countp); /** * fdtdec_set_carveout() - sets a carveout region for a given node @@ -1065,7 +1072,8 @@ int fdtdec_get_carveout(const void *blob, const char *node, * .end = 0x934b2fff, * }; * - * fdtdec_set_carveout(fdt, node, "memory-region", 0, "framebuffer", &fb); + * fdtdec_set_carveout(fdt, node, "memory-region", 0, "framebuffer", NULL, + * 0, &fb); * * dc@54200000 is a display controller and was set up by the bootloader to * scan out the framebuffer specified by "fb". This would cause the following @@ -1104,10 +1112,13 @@ int fdtdec_get_carveout(const void *blob, const char *node, * @param index index of the phandle to store * @param name base name of the reserved-memory node to create * @param carveout information about the carveout to add + * @param compatibles compatible strings to set for the carveout + * @param count number of compatible strings * @return 0 on success or a negative error code on failure */ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, unsigned int index, const char *name, + const char **compatibles, unsigned int count, const struct fdt_memory *carveout); /** diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 3ada77d80c..f124f0555b 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1293,6 +1293,7 @@ static int fdtdec_init_reserved_memory(void *blob) int fdtdec_add_reserved_memory(void *blob, const char *basename, const struct fdt_memory *carveout, + const char **compatibles, unsigned int count, uint32_t *phandlep, bool no_map) { fdt32_t cells[4] = {}, *ptr = cells; @@ -1399,6 +1400,28 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, return err; } + if (compatibles && count > 0) { + size_t length = 0, len = 0; + unsigned int i; + char *buffer; + + for (i = 0; i < count; i++) + length += strlen(compatibles[i]) + 1; + + buffer = malloc(length); + if (!buffer) + return -FDT_ERR_INTERNAL; + + for (i = 0; i < count; i++) + len += strlcpy(buffer + len, compatibles[i], + length - len) + 1; + + err = fdt_setprop(blob, node, "compatible", buffer, length); + free(buffer); + if (err < 0) + return err; + } + /* return the phandle for the new node for the caller to use */ if (phandlep) *phandlep = phandle; @@ -1408,7 +1431,8 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, int fdtdec_get_carveout(const void *blob, const char *node, const char *prop_name, unsigned int index, - struct fdt_memory *carveout, const char **name) + struct fdt_memory *carveout, const char **name, + const char ***compatiblesp, unsigned int *countp) { const fdt32_t *prop; uint32_t phandle; @@ -1446,6 +1470,45 @@ int fdtdec_get_carveout(const void *blob, const char *node, if (name) *name = fdt_get_name(blob, offset, NULL); + if (compatiblesp) { + const char **compatibles = NULL; + const char *start, *end, *ptr; + unsigned int count = 0; + + prop = fdt_getprop(blob, offset, "compatible", &len); + if (!prop) + goto skip_compat; + + start = ptr = (const char *)prop; + end = start + len; + + while (ptr < end) { + ptr = strchrnul(ptr, '\0'); + count++; + ptr++; + } + + compatibles = malloc(sizeof(ptr) * count); + if (!compatibles) + return -FDT_ERR_INTERNAL; + + ptr = start; + count = 0; + + while (ptr < end) { + compatibles[count] = ptr; + ptr = strchrnul(ptr, '\0'); + count++; + ptr++; + } + +skip_compat: + *compatiblesp = compatibles; + + if (countp) + *countp = count; + } + carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset, "reg", 0, &size, true); @@ -1461,6 +1524,7 @@ int fdtdec_get_carveout(const void *blob, const char *node, int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, unsigned int index, const char *name, + const char **compatibles, unsigned int count, const struct fdt_memory *carveout) { uint32_t phandle; @@ -1468,7 +1532,8 @@ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, fdt32_t value; void *prop; - err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle, false); + err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles, + count, &phandle, false); if (err < 0) { debug("failed to add reserved memory: %d\n", err); return err; diff --git a/lib/fdtdec_test.c b/lib/fdtdec_test.c index 760aca2669..72c3001a21 100644 --- a/lib/fdtdec_test.c +++ b/lib/fdtdec_test.c @@ -190,7 +190,7 @@ static int make_fdt_carveout_device(void *fdt, uint32_t na, uint32_t ns) CHECK(fdt_setprop(fdt, offset, "reg", cells, (na + ns) * sizeof(*cells))); return fdtdec_set_carveout(fdt, name, "memory-region", 0, - "framebuffer", &carveout); + "framebuffer", NULL, 0, &carveout); } static int check_fdt_carveout(void *fdt, uint32_t address_cells, @@ -215,7 +215,7 @@ static int check_fdt_carveout(void *fdt, uint32_t address_cells, &expected.end, address_cells, size_cells); CHECK(fdtdec_get_carveout(fdt, name, "memory-region", 0, &carveout, - NULL)); + NULL, NULL, NULL)); if ((carveout.start != expected.start) || (carveout.end != expected.end)) { diff --git a/lib/optee/optee.c b/lib/optee/optee.c index 766d0d9e3f..3fbde934fb 100644 --- a/lib/optee/optee.c +++ b/lib/optee/optee.c @@ -177,6 +177,7 @@ int optee_copy_fdt_nodes(void *new_blob) ret = fdtdec_add_reserved_memory(new_blob, nodename, &carveout, + NULL, 0, NULL, true); free(oldname); diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c index 1f630ea3ee..7b543e7b99 100644 --- a/test/dm/fdtdec.c +++ b/test/dm/fdtdec.c @@ -30,19 +30,19 @@ static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts) resv.end = 0x2000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2, "test_resv1", - &resv)); + NULL, 0, &resv)); resv.start = 0x10000; resv.end = 0x20000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1, "test_resv2", - &resv)); + NULL, 0, &resv)); resv.start = 0x100000; resv.end = 0x200000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0, "test_resv3", - &resv)); + NULL, 0, &resv)); offset = fdt_path_offset(blob, "/a-test"); ut_assert(offset > 0); @@ -80,8 +80,8 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) /* Insert a memory region in /reserved-memory node */ resv.start = 0x1000; resv.end = 0x1fff; - ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", - &resv, &phandle, false)); + ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", &resv, + NULL, 0, &phandle, false)); /* Test /reserve-memory and its subnode should exist */ parent = fdt_path_offset(blob, "/reserved-memory"); @@ -101,8 +101,8 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) resv.start = 0x2000; resv.end = 0x2fff; - ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", - &resv, &phandle1, true)); + ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", &resv, + NULL, 0, &phandle1, true)); subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1"); ut_assert(subnode > 0); @@ -118,8 +118,8 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) */ resv.start = 0x1000; resv.end = 0x1fff; - ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", - &resv, &phandle1, false)); + ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", &resv, + NULL, 0, &phandle1, false)); subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2"); ut_assert(subnode < 0); From 9019487608c8afe7d3fc34cb5192df064b60cdb7 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:20 +0200 Subject: [PATCH 4/9] fdtdec: Reorder fdtdec_set_carveout() parameters for consistency The fdtdec_set_carveout() function's parameters are inconsistent with the parameters passed to fdtdec_add_reserved_memory(). Fix up the order to make it more consistent. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- board/nvidia/p2371-2180/p2371-2180.c | 4 ++-- board/nvidia/p2771-0000/p2771-0000.c | 4 ++-- board/nvidia/p3450-0000/p3450-0000.c | 4 ++-- include/fdtdec.h | 8 ++++---- lib/fdtdec.c | 6 +++--- lib/fdtdec_test.c | 4 ++-- test/dm/fdtdec.c | 15 ++++++--------- 7 files changed, 21 insertions(+), 24 deletions(-) diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index 58077255d0..bc0a133725 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -138,8 +138,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) return err; } - err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - NULL, 0, &fb); + err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, + "framebuffer", NULL, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index e35e6b6f48..cde5eff02f 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -114,8 +114,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) return err; } - err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - NULL, 0, &fb); + err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, + "framebuffer", NULL, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index f16916460e..e737fc1dab 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -137,8 +137,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) return err; } - err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer", - NULL, 0, &fb); + err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, + "framebuffer", NULL, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/include/fdtdec.h b/include/fdtdec.h index 5a6a7cbd99..d360d7bce4 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -1110,16 +1110,16 @@ int fdtdec_get_carveout(const void *blob, const char *node, * @param prop_name name of the property in which to store the phandle of * the carveout * @param index index of the phandle to store - * @param name base name of the reserved-memory node to create * @param carveout information about the carveout to add + * @param name base name of the reserved-memory node to create * @param compatibles compatible strings to set for the carveout * @param count number of compatible strings * @return 0 on success or a negative error code on failure */ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, - unsigned int index, const char *name, - const char **compatibles, unsigned int count, - const struct fdt_memory *carveout); + unsigned int index, const struct fdt_memory *carveout, + const char *name, const char **compatibles, + unsigned int count); /** * Set up the device tree ready for use diff --git a/lib/fdtdec.c b/lib/fdtdec.c index f124f0555b..a0ecc72b6c 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1523,9 +1523,9 @@ skip_compat: } int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, - unsigned int index, const char *name, - const char **compatibles, unsigned int count, - const struct fdt_memory *carveout) + unsigned int index, const struct fdt_memory *carveout, + const char *name, const char **compatibles, + unsigned int count) { uint32_t phandle; int err, offset, len; diff --git a/lib/fdtdec_test.c b/lib/fdtdec_test.c index 72c3001a21..3af9fb5da6 100644 --- a/lib/fdtdec_test.c +++ b/lib/fdtdec_test.c @@ -189,8 +189,8 @@ static int make_fdt_carveout_device(void *fdt, uint32_t na, uint32_t ns) offset = CHECK(fdt_add_subnode(fdt, 0, name + 1)); CHECK(fdt_setprop(fdt, offset, "reg", cells, (na + ns) * sizeof(*cells))); - return fdtdec_set_carveout(fdt, name, "memory-region", 0, - "framebuffer", NULL, 0, &carveout); + return fdtdec_set_carveout(fdt, name, "memory-region", 0, &carveout, + "framebuffer", NULL, 0); } static int check_fdt_carveout(void *fdt, uint32_t address_cells, diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c index 7b543e7b99..385aa77a68 100644 --- a/test/dm/fdtdec.c +++ b/test/dm/fdtdec.c @@ -28,21 +28,18 @@ static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts) resv.start = 0x1000; resv.end = 0x2000; - ut_assertok(fdtdec_set_carveout(blob, "/a-test", - "memory-region", 2, "test_resv1", - NULL, 0, &resv)); + ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2, + &resv, "test_resv1", NULL, 0)); resv.start = 0x10000; resv.end = 0x20000; - ut_assertok(fdtdec_set_carveout(blob, "/a-test", - "memory-region", 1, "test_resv2", - NULL, 0, &resv)); + ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1, + &resv, "test_resv2", NULL, 0)); resv.start = 0x100000; resv.end = 0x200000; - ut_assertok(fdtdec_set_carveout(blob, "/a-test", - "memory-region", 0, "test_resv3", - NULL, 0, &resv)); + ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0, + &resv, "test_resv3", NULL, 0)); offset = fdt_path_offset(blob, "/a-test"); ut_assert(offset > 0); From b9aad375917d4ae0dec5aedcdfa79929e1dbb730 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:21 +0200 Subject: [PATCH 5/9] fdtdec: Support reserved-memory flags Reserved memory nodes can have additional flags. Support reading and writing these flags to ensure that reserved memory nodes can be properly parsed and emitted. This converts support for the existing "no-map" flag to avoid extending the argument list for fdtdec_add_reserved_memory() to excessive length. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- arch/arm/cpu/armv8/fsl-layerscape/soc.c | 2 +- arch/riscv/lib/fdt_fixup.c | 2 +- board/nvidia/p2371-2180/p2371-2180.c | 4 ++-- board/nvidia/p2771-0000/p2771-0000.c | 4 ++-- board/nvidia/p3450-0000/p3450-0000.c | 4 ++-- include/fdtdec.h | 20 +++++++++++------- lib/fdtdec.c | 28 ++++++++++++++++--------- lib/fdtdec_test.c | 4 ++-- lib/optee/optee.c | 3 ++- test/dm/fdtdec.c | 13 ++++++------ 10 files changed, 50 insertions(+), 34 deletions(-) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 4f17c327af..adf3b4eea5 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -55,7 +55,7 @@ int ls_gic_rd_tables_init(void *blob) lpi_base.start = addr; lpi_base.end = addr + size - 1; ret = fdtdec_add_reserved_memory(blob, "lpi_rd_table", &lpi_base, NULL, - NULL, 0, false); + NULL, 0, 0); if (ret) { debug("%s: failed to add reserved memory\n", __func__); return ret; diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c index 7ac30a4f7c..36c16e9be2 100644 --- a/arch/riscv/lib/fdt_fixup.c +++ b/arch/riscv/lib/fdt_fixup.c @@ -75,7 +75,7 @@ int riscv_fdt_copy_resv_mem_node(const void *src, void *dst) pmp_mem.start = addr; pmp_mem.end = addr + size - 1; err = fdtdec_add_reserved_memory(dst, basename, &pmp_mem, - NULL, 0, &phandle, false); + NULL, 0, &phandle, 0); if (err < 0 && err != -FDT_ERR_EXISTS) { log_err("failed to add reserved memory: %d\n", err); return err; diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index bc0a133725..137c7d3b12 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -129,7 +129,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) int err; err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL); + NULL, NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -139,7 +139,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0); + "framebuffer", NULL, 0, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index cde5eff02f..3d2653d1f0 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -105,7 +105,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) int err; err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL); + NULL, NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -115,7 +115,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0); + "framebuffer", NULL, 0, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index e737fc1dab..2770862a49 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -128,7 +128,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) int err; err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL); + NULL, NULL, NULL); if (err < 0) { if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, @@ -138,7 +138,7 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) } err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0); + "framebuffer", NULL, 0, 0); if (err < 0) { printf("failed to set carveout for %s: %d\n", node, err); return err; diff --git a/include/fdtdec.h b/include/fdtdec.h index d360d7bce4..f94d1f4f3a 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -977,6 +977,9 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) return fdt_setprop_u32(blob, node, "phandle", phandle); } +/* add "no-map" property */ +#define FDTDEC_RESERVED_MEMORY_NO_MAP (1 << 0) + /** * fdtdec_add_reserved_memory() - add or find a reserved-memory node * @@ -996,7 +999,7 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * uint32_t phandle; * * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, NULL, 0, &phandle, - * false); + * 0); * * This results in the following subnode being added to the top-level * /reserved-memory node: @@ -1025,13 +1028,13 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * @param count number of compatible strings for the carveout region * @param phandlep return location for the phandle of the carveout region * can be NULL if no phandle should be added - * @param no_map add "no-map" property if true + * @param flags bitmask of flags to set for the carveout region * @return 0 on success or a negative error code on failure */ int fdtdec_add_reserved_memory(void *blob, const char *basename, const struct fdt_memory *carveout, const char **compatibles, unsigned int count, - uint32_t *phandlep, bool no_map); + uint32_t *phandlep, unsigned long flags); /** * fdtdec_get_carveout() - reads a carveout from an FDT @@ -1048,13 +1051,15 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, * @param carveout return location for the carveout information * @param name return location for the carveout name * @param compatiblesp return location for compatible strings - * @param countp return location for the number of compatible strings + * @param countp return location for the number of compatible strings + * @param flags return location for the flags of the carveout * @return 0 on success or a negative error code on failure */ int fdtdec_get_carveout(const void *blob, const char *node, const char *prop_name, unsigned int index, struct fdt_memory *carveout, const char **name, - const char ***compatiblesp, unsigned int *countp); + const char ***compatiblesp, unsigned int *countp, + unsigned long *flags); /** * fdtdec_set_carveout() - sets a carveout region for a given node @@ -1073,7 +1078,7 @@ int fdtdec_get_carveout(const void *blob, const char *node, * }; * * fdtdec_set_carveout(fdt, node, "memory-region", 0, "framebuffer", NULL, - * 0, &fb); + * 0, &fb, 0); * * dc@54200000 is a display controller and was set up by the bootloader to * scan out the framebuffer specified by "fb". This would cause the following @@ -1114,12 +1119,13 @@ int fdtdec_get_carveout(const void *blob, const char *node, * @param name base name of the reserved-memory node to create * @param compatibles compatible strings to set for the carveout * @param count number of compatible strings + * @param flags bitmask of flags to set for the carveout * @return 0 on success or a negative error code on failure */ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, unsigned int index, const struct fdt_memory *carveout, const char *name, const char **compatibles, - unsigned int count); + unsigned int count, unsigned long flags); /** * Set up the device tree ready for use diff --git a/lib/fdtdec.c b/lib/fdtdec.c index a0ecc72b6c..ad090ea51e 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1294,7 +1294,7 @@ static int fdtdec_init_reserved_memory(void *blob) int fdtdec_add_reserved_memory(void *blob, const char *basename, const struct fdt_memory *carveout, const char **compatibles, unsigned int count, - uint32_t *phandlep, bool no_map) + uint32_t *phandlep, unsigned long flags) { fdt32_t cells[4] = {}, *ptr = cells; uint32_t upper, lower, phandle; @@ -1364,6 +1364,12 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, if (node < 0) return node; + if (flags & FDTDEC_RESERVED_MEMORY_NO_MAP) { + err = fdt_setprop(blob, node, "no-map", NULL, 0); + if (err < 0) + return err; + } + if (phandlep) { err = fdt_generate_phandle(blob, &phandle); if (err < 0) @@ -1394,12 +1400,6 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, if (err < 0) return err; - if (no_map) { - err = fdt_setprop(blob, node, "no-map", NULL, 0); - if (err < 0) - return err; - } - if (compatibles && count > 0) { size_t length = 0, len = 0; unsigned int i; @@ -1432,7 +1432,8 @@ int fdtdec_add_reserved_memory(void *blob, const char *basename, int fdtdec_get_carveout(const void *blob, const char *node, const char *prop_name, unsigned int index, struct fdt_memory *carveout, const char **name, - const char ***compatiblesp, unsigned int *countp) + const char ***compatiblesp, unsigned int *countp, + unsigned long *flags) { const fdt32_t *prop; uint32_t phandle; @@ -1519,13 +1520,20 @@ skip_compat: carveout->end = carveout->start + size - 1; + if (flags) { + *flags = 0; + + if (fdtdec_get_bool(blob, offset, "no-map")) + *flags |= FDTDEC_RESERVED_MEMORY_NO_MAP; + } + return 0; } int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, unsigned int index, const struct fdt_memory *carveout, const char *name, const char **compatibles, - unsigned int count) + unsigned int count, unsigned long flags) { uint32_t phandle; int err, offset, len; @@ -1533,7 +1541,7 @@ int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, void *prop; err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles, - count, &phandle, false); + count, &phandle, flags); if (err < 0) { debug("failed to add reserved memory: %d\n", err); return err; diff --git a/lib/fdtdec_test.c b/lib/fdtdec_test.c index 3af9fb5da6..85351c75ca 100644 --- a/lib/fdtdec_test.c +++ b/lib/fdtdec_test.c @@ -190,7 +190,7 @@ static int make_fdt_carveout_device(void *fdt, uint32_t na, uint32_t ns) CHECK(fdt_setprop(fdt, offset, "reg", cells, (na + ns) * sizeof(*cells))); return fdtdec_set_carveout(fdt, name, "memory-region", 0, &carveout, - "framebuffer", NULL, 0); + "framebuffer", NULL, 0, 0); } static int check_fdt_carveout(void *fdt, uint32_t address_cells, @@ -215,7 +215,7 @@ static int check_fdt_carveout(void *fdt, uint32_t address_cells, &expected.end, address_cells, size_cells); CHECK(fdtdec_get_carveout(fdt, name, "memory-region", 0, &carveout, - NULL, NULL, NULL)); + NULL, NULL, NULL, NULL)); if ((carveout.start != expected.start) || (carveout.end != expected.end)) { diff --git a/lib/optee/optee.c b/lib/optee/optee.c index 3fbde934fb..b036224044 100644 --- a/lib/optee/optee.c +++ b/lib/optee/optee.c @@ -161,6 +161,7 @@ int optee_copy_fdt_nodes(void *new_blob) .start = res.start, .end = res.end, }; + unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP; char *oldname, *nodename, *tmp; oldname = strdup(name); @@ -178,7 +179,7 @@ int optee_copy_fdt_nodes(void *new_blob) nodename, &carveout, NULL, 0, - NULL, true); + NULL, flags); free(oldname); if (ret < 0) diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c index 385aa77a68..087d4846da 100644 --- a/test/dm/fdtdec.c +++ b/test/dm/fdtdec.c @@ -29,17 +29,17 @@ static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts) resv.start = 0x1000; resv.end = 0x2000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2, - &resv, "test_resv1", NULL, 0)); + &resv, "test_resv1", NULL, 0, 0)); resv.start = 0x10000; resv.end = 0x20000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1, - &resv, "test_resv2", NULL, 0)); + &resv, "test_resv2", NULL, 0, 0)); resv.start = 0x100000; resv.end = 0x200000; ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0, - &resv, "test_resv3", NULL, 0)); + &resv, "test_resv3", NULL, 0, 0)); offset = fdt_path_offset(blob, "/a-test"); ut_assert(offset > 0); @@ -64,6 +64,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) fdt_addr_t addr; fdt_size_t size; void *blob; + unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP; int blob_sz, parent, subnode; uint32_t phandle, phandle1; @@ -78,7 +79,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) resv.start = 0x1000; resv.end = 0x1fff; ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", &resv, - NULL, 0, &phandle, false)); + NULL, 0, &phandle, 0)); /* Test /reserve-memory and its subnode should exist */ parent = fdt_path_offset(blob, "/reserved-memory"); @@ -99,7 +100,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) resv.start = 0x2000; resv.end = 0x2fff; ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", &resv, - NULL, 0, &phandle1, true)); + NULL, 0, &phandle1, flags)); subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1"); ut_assert(subnode > 0); @@ -116,7 +117,7 @@ static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts) resv.start = 0x1000; resv.end = 0x1fff; ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", &resv, - NULL, 0, &phandle1, false)); + NULL, 0, &phandle1, 0)); subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2"); ut_assert(subnode < 0); From db8a0306c91c470854fcfb9b3373ab98b18d3eba Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:22 +0200 Subject: [PATCH 6/9] ARM: tegra: Support multiple reserved memory regions Support multiple reserved memory regions per device to support platforms that use both a framebuffer and color conversion lookup table for early boot display splash. While at it, also pass along the name, compatible strings and flags of the carveouts. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- board/nvidia/p2371-2180/p2371-2180.c | 55 +++++++++++++++++++++------- board/nvidia/p2771-0000/p2771-0000.c | 55 +++++++++++++++++++++------- board/nvidia/p3450-0000/p3450-0000.c | 55 +++++++++++++++++++++------- 3 files changed, 126 insertions(+), 39 deletions(-) diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index 137c7d3b12..f5126c552b 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -125,24 +126,52 @@ static void ft_mac_address_setup(void *fdt) static int ft_copy_carveout(void *dst, const void *src, const char *node) { - struct fdt_memory fb; + unsigned int index = 0; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL, NULL); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", node, + while (true) { + const char **compatibles = NULL; + unsigned int num_compatibles; + struct fdt_memory carveout; + unsigned long flags; + char *copy = NULL; + const char *name; + + err = fdtdec_get_carveout(src, node, "memory-region", index, + &carveout, &name, &compatibles, + &num_compatibles, &flags); + if (err < 0) { + if (err != -FDT_ERR_NOTFOUND) + printf("failed to get carveout for %s: %d\n", + node, err); + + return err; + } + + if (name) { + const char *ptr = strchr(name, '@'); + + if (ptr) { + copy = strndup(name, ptr - name); + name = copy; + } + } else { + name = "carveout"; + } + + err = fdtdec_set_carveout(dst, node, "memory-region", index, + &carveout, name, compatibles, + num_compatibles, flags); + if (err < 0) { + printf("failed to set carveout for %s: %d\n", node, err); + return err; + } - return err; - } + if (copy) + free(copy); - err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0, 0); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, err); - return err; + index++; } return 0; diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index 3d2653d1f0..46c36a22db 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include "../p2571/max77620_init.h" @@ -101,24 +102,52 @@ static void ft_mac_address_setup(void *fdt) static int ft_copy_carveout(void *dst, const void *src, const char *node) { - struct fdt_memory fb; + unsigned int index = 0; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL, NULL); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", node, + while (true) { + const char **compatibles = NULL; + unsigned int num_compatibles; + struct fdt_memory carveout; + unsigned long flags; + char *copy = NULL; + const char *name; + + err = fdtdec_get_carveout(src, node, "memory-region", index, + &carveout, &name, &compatibles, + &num_compatibles, &flags); + if (err < 0) { + if (err != -FDT_ERR_NOTFOUND) + printf("failed to get carveout for %s: %d\n", + node, err); + + return err; + } + + if (name) { + const char *ptr = strchr(name, '@'); + + if (ptr) { + copy = strndup(name, ptr - name); + name = copy; + } + } else { + name = "carveout"; + } + + err = fdtdec_set_carveout(dst, node, "memory-region", index, + &carveout, name, compatibles, + num_compatibles, flags); + if (err < 0) { + printf("failed to set carveout for %s: %d\n", node, err); + return err; + } - return err; - } + if (copy) + free(copy); - err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0, 0); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, err); - return err; + index++; } return 0; diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index 2770862a49..97b99001a9 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -124,24 +125,52 @@ static void ft_mac_address_setup(void *fdt) static int ft_copy_carveout(void *dst, const void *src, const char *node) { - struct fdt_memory fb; + unsigned int index = 0; int err; - err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL, - NULL, NULL, NULL); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", node, + while (true) { + const char **compatibles = NULL; + unsigned int num_compatibles; + struct fdt_memory carveout; + unsigned long flags; + char *copy = NULL; + const char *name; + + err = fdtdec_get_carveout(src, node, "memory-region", index, + &carveout, &name, &compatibles, + &num_compatibles, &flags); + if (err < 0) { + if (err != -FDT_ERR_NOTFOUND) + printf("failed to get carveout for %s: %d\n", + node, err); + + return err; + } + + if (name) { + const char *ptr = strchr(name, '@'); + + if (ptr) { + copy = strndup(name, ptr - name); + name = copy; + } + } else { + name = "carveout"; + } + + err = fdtdec_set_carveout(dst, node, "memory-region", index, + &carveout, name, compatibles, + num_compatibles, flags); + if (err < 0) { + printf("failed to set carveout for %s: %d\n", node, err); + return err; + } - return err; - } + if (copy) + free(copy); - err = fdtdec_set_carveout(dst, node, "memory-region", 0, &fb, - "framebuffer", NULL, 0, 0); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, err); - return err; + index++; } return 0; From f814ff5e0b10a0b6a1b303a849e68f302f0d8627 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 13 Oct 2021 13:06:02 -0700 Subject: [PATCH 7/9] ARM: tegra: Support EMC frequency tables on Tegra210 The EMC frequency tables are created from a training sequence performed during early boot and passed in via a reserved memory region by nvtboot. Copy this table to the kernel DTB so that the kernel can use it to scale the EMC frequency at runtime. Note that early bootloaders store the EMC table at an address that currently intersects with the load address of the initial ramdisk. In order to avoid copying the table to a different address, simply change the load address for the initial ramdisk in U-Boot. Signed-off-by: Thierry Reding Signed-off-by: Tom Warren --- board/nvidia/p2371-2180/p2371-2180.c | 1 + board/nvidia/p3450-0000/p3450-0000.c | 1 + include/configs/tegra210-common.h | 2 +- 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index f5126c552b..cd5dc2de62 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -183,6 +183,7 @@ static void ft_carveout_setup(void *fdt) static const char * const nodes[] = { "/host1x@50000000/dc@54200000", "/host1x@50000000/dc@54240000", + "/external-memory-controller@7001b000", }; unsigned int i; int err; diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index 97b99001a9..ba57528265 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -182,6 +182,7 @@ static void ft_carveout_setup(void *fdt) static const char * const nodes[] = { "/host1x@50000000/dc@54200000", "/host1x@50000000/dc@54240000", + "/external-memory-controller@7001b000", }; unsigned int i; int err; diff --git a/include/configs/tegra210-common.h b/include/configs/tegra210-common.h index b9e04147be..e1b91f6250 100644 --- a/include/configs/tegra210-common.h +++ b/include/configs/tegra210-common.h @@ -44,7 +44,7 @@ "kernel_addr_r=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \ "fdtfile=" FDTFILE "\0" \ "fdt_addr_r=0x83000000\0" \ - "ramdisk_addr_r=0x83200000\0" + "ramdisk_addr_r=0x83420000\0" /* For USB EHCI controller */ #define CONFIG_EHCI_IS_TDI From 77409c7f83622a71060bf78142149d39540ba405 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:24 +0200 Subject: [PATCH 8/9] ARM: tegra: Refactor DT update helpers Rather than duplicate the Ethernet MAC address and carveout updating code for each board, move it to a common location and make it more reusable. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- arch/arm/include/asm/arch-tegra/board.h | 10 ++ arch/arm/mach-tegra/dt-setup.c | 118 ++++++++++++++++++++++ board/nvidia/p2371-2180/p2371-2180.c | 123 ++--------------------- board/nvidia/p2771-0000/p2771-0000.c | 126 ++--------------------- board/nvidia/p3450-0000/p3450-0000.c | 127 ++---------------------- 5 files changed, 149 insertions(+), 355 deletions(-) diff --git a/arch/arm/include/asm/arch-tegra/board.h b/arch/arm/include/asm/arch-tegra/board.h index 24d0db8ced..cd4d0ee3c9 100644 --- a/arch/arm/include/asm/arch-tegra/board.h +++ b/arch/arm/include/asm/arch-tegra/board.h @@ -30,4 +30,14 @@ void pin_mux_nand(void); /* overridable NAND pinmux setup */ void pin_mux_mmc(void); /* overridable mmc pinmux setup */ void pin_mux_display(void); /* overridable DISPLAY pinmux setup */ +/* + * Helpers for various standard DT update mechanisms. + */ + +#if defined(CONFIG_ARM64) +void ft_mac_address_setup(void *fdt); +void ft_carveout_setup(void *fdt, const char *const *nodes, + unsigned int count); +#endif + #endif diff --git a/arch/arm/mach-tegra/dt-setup.c b/arch/arm/mach-tegra/dt-setup.c index 602b20e6b7..894a6358a2 100644 --- a/arch/arm/mach-tegra/dt-setup.c +++ b/arch/arm/mach-tegra/dt-setup.c @@ -4,6 +4,9 @@ */ #include +#include +#include +#include #include /* @@ -31,3 +34,118 @@ int ft_system_setup(void *blob, struct bd_info *bd) return 0; } + +#if defined(CONFIG_ARM64) +void ft_mac_address_setup(void *fdt) +{ + const void *cboot_fdt = (const void *)cboot_boot_x0; + uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN]; + const char *path; + int offset, err; + + err = cboot_get_ethaddr(cboot_fdt, local_mac); + if (err < 0) + memset(local_mac, 0, ETH_ALEN); + + path = fdt_get_alias(fdt, "ethernet"); + if (!path) + return; + + debug("ethernet alias found: %s\n", path); + + offset = fdt_path_offset(fdt, path); + if (offset < 0) { + printf("ethernet alias points to absent node %s\n", path); + return; + } + + if (is_valid_ethaddr(local_mac)) { + err = fdt_setprop(fdt, offset, "local-mac-address", local_mac, + ETH_ALEN); + if (!err) + debug("Local MAC address set: %pM\n", local_mac); + } + + if (eth_env_get_enetaddr("ethaddr", mac)) { + if (memcmp(local_mac, mac, ETH_ALEN) != 0) { + err = fdt_setprop(fdt, offset, "mac-address", mac, + ETH_ALEN); + if (!err) + debug("MAC address set: %pM\n", mac); + } + } +} + +static int ft_copy_carveout(void *dst, const void *src, const char *node) +{ + struct fdt_memory carveout; + unsigned int index = 0; + int err; + + while (true) { + const char **compatibles = NULL; + unsigned int num_compatibles; + unsigned long flags; + char *copy = NULL; + const char *name; + + err = fdtdec_get_carveout(src, node, "memory-region", index, + &carveout, &name, &compatibles, + &num_compatibles, &flags); + if (err < 0) { + if (err != -FDT_ERR_NOTFOUND) + printf("failed to get carveout for %s: %d\n", + node, err); + + return err; + } + + if (name) { + const char *ptr = strchr(name, '@'); + + if (ptr) { + copy = strndup(name, ptr - name); + name = copy; + } + } else { + name = "carveout"; + } + + err = fdtdec_set_carveout(dst, node, "memory-region", index, + &carveout, name, compatibles, + num_compatibles, flags); + if (err < 0) { + printf("failed to set carveout for %s: %d\n", node, + err); + return err; + } + + if (copy) + free(copy); + + index++; + } + + return 0; +} + +void ft_carveout_setup(void *fdt, const char * const *nodes, unsigned int count) +{ + const void *cboot_fdt = (const void *)cboot_boot_x0; + unsigned int i; + int err; + + for (i = 0; i < count; i++) { + printf("copying carveout for %s...\n", nodes[i]); + + err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]); + if (err < 0) { + if (err != -FDT_ERR_NOTFOUND) + printf("failed to copy carveout for %s: %d\n", + nodes[i], err); + + continue; + } + } +} +#endif diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index cd5dc2de62..816c7bec6a 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include "../p2571/max77620_init.h" void pin_mux_mmc(void) @@ -84,125 +84,16 @@ int tegra_pcie_board_init(void) } #endif /* PCI */ -static void ft_mac_address_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN]; - const char *path; - int offset, err; - - err = cboot_get_ethaddr(cboot_fdt, local_mac); - if (err < 0) - memset(local_mac, 0, ETH_ALEN); - - path = fdt_get_alias(fdt, "ethernet"); - if (!path) - return; - - debug("ethernet alias found: %s\n", path); - - offset = fdt_path_offset(fdt, path); - if (offset < 0) { - printf("ethernet alias points to absent node %s\n", path); - return; - } - - if (is_valid_ethaddr(local_mac)) { - err = fdt_setprop(fdt, offset, "local-mac-address", local_mac, - ETH_ALEN); - if (!err) - debug("Local MAC address set: %pM\n", local_mac); - } - - if (eth_env_get_enetaddr("ethaddr", mac)) { - if (memcmp(local_mac, mac, ETH_ALEN) != 0) { - err = fdt_setprop(fdt, offset, "mac-address", mac, - ETH_ALEN); - if (!err) - debug("MAC address set: %pM\n", mac); - } - } -} - -static int ft_copy_carveout(void *dst, const void *src, const char *node) -{ - unsigned int index = 0; - int err; - - while (true) { - const char **compatibles = NULL; - unsigned int num_compatibles; - struct fdt_memory carveout; - unsigned long flags; - char *copy = NULL; - const char *name; - - err = fdtdec_get_carveout(src, node, "memory-region", index, - &carveout, &name, &compatibles, - &num_compatibles, &flags); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", - node, err); - - return err; - } - - if (name) { - const char *ptr = strchr(name, '@'); - - if (ptr) { - copy = strndup(name, ptr - name); - name = copy; - } - } else { - name = "carveout"; - } - - err = fdtdec_set_carveout(dst, node, "memory-region", index, - &carveout, name, compatibles, - num_compatibles, flags); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, - err); - return err; - } - - if (copy) - free(copy); - - index++; - } - - return 0; -} - -static void ft_carveout_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - static const char * const nodes[] = { - "/host1x@50000000/dc@54200000", - "/host1x@50000000/dc@54240000", - "/external-memory-controller@7001b000", - }; - unsigned int i; - int err; - - for (i = 0; i < ARRAY_SIZE(nodes); i++) { - err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to copy carveout for %s: %d\n", - nodes[i], err); - continue; - } - } -} +static const char * const nodes[] = { + "/host1x@50000000/dc@54200000", + "/host1x@50000000/dc@54240000", + "/external-memory-controller@7001b000", +}; int ft_board_setup(void *fdt, struct bd_info *bd) { ft_mac_address_setup(fdt); - ft_carveout_setup(fdt); + ft_carveout_setup(fdt, nodes, ARRAY_SIZE(nodes)); return 0; } diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index 46c36a22db..5ff89c4542 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include "../p2571/max77620_init.h" void pin_mux_mmc(void) @@ -60,128 +60,16 @@ int tegra_pcie_board_init(void) } #endif -static void ft_mac_address_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN]; - const char *path; - int offset, err; - - err = cboot_get_ethaddr(cboot_fdt, local_mac); - if (err < 0) - memset(local_mac, 0, ETH_ALEN); - - path = fdt_get_alias(fdt, "ethernet"); - if (!path) - return; - - debug("ethernet alias found: %s\n", path); - - offset = fdt_path_offset(fdt, path); - if (offset < 0) { - printf("ethernet alias points to absent node %s\n", path); - return; - } - - if (is_valid_ethaddr(local_mac)) { - err = fdt_setprop(fdt, offset, "local-mac-address", local_mac, - ETH_ALEN); - if (!err) - debug("Local MAC address set: %pM\n", local_mac); - } - - if (eth_env_get_enetaddr("ethaddr", mac)) { - if (memcmp(local_mac, mac, ETH_ALEN) != 0) { - err = fdt_setprop(fdt, offset, "mac-address", mac, - ETH_ALEN); - if (!err) - debug("MAC address set: %pM\n", mac); - } - } -} - -static int ft_copy_carveout(void *dst, const void *src, const char *node) -{ - unsigned int index = 0; - int err; - - while (true) { - const char **compatibles = NULL; - unsigned int num_compatibles; - struct fdt_memory carveout; - unsigned long flags; - char *copy = NULL; - const char *name; - - err = fdtdec_get_carveout(src, node, "memory-region", index, - &carveout, &name, &compatibles, - &num_compatibles, &flags); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", - node, err); - - return err; - } - - if (name) { - const char *ptr = strchr(name, '@'); - - if (ptr) { - copy = strndup(name, ptr - name); - name = copy; - } - } else { - name = "carveout"; - } - - err = fdtdec_set_carveout(dst, node, "memory-region", index, - &carveout, name, compatibles, - num_compatibles, flags); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, - err); - return err; - } - - if (copy) - free(copy); - - index++; - } - - return 0; -} - -static void ft_carveout_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - static const char * const nodes[] = { - "/host1x@13e00000/display-hub@15200000/display@15200000", - "/host1x@13e00000/display-hub@15200000/display@15210000", - "/host1x@13e00000/display-hub@15200000/display@15220000", - }; - unsigned int i; - int err; - - for (i = 0; i < ARRAY_SIZE(nodes); i++) { - printf("copying carveout for %s...\n", nodes[i]); - - err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to copy carveout for %s: %d\n", - nodes[i], err); - - continue; - } - } -} +static const char * const nodes[] = { + "/host1x@13e00000/display-hub@15200000/display@15200000", + "/host1x@13e00000/display-hub@15200000/display@15210000", + "/host1x@13e00000/display-hub@15200000/display@15220000", +}; int ft_board_setup(void *fdt, struct bd_info *bd) { ft_mac_address_setup(fdt); - ft_carveout_setup(fdt); + ft_carveout_setup(fdt, nodes, ARRAY_SIZE(nodes)); return 0; } diff --git a/board/nvidia/p3450-0000/p3450-0000.c b/board/nvidia/p3450-0000/p3450-0000.c index ba57528265..fb1a224daa 100644 --- a/board/nvidia/p3450-0000/p3450-0000.c +++ b/board/nvidia/p3450-0000/p3450-0000.c @@ -11,10 +11,9 @@ #include #include #include -#include -#include #include #include +#include #include "../p2571/max77620_init.h" void pin_mux_mmc(void) @@ -83,128 +82,16 @@ int tegra_pcie_board_init(void) } #endif /* PCI */ -static void ft_mac_address_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN]; - const char *path; - int offset, err; - - err = cboot_get_ethaddr(cboot_fdt, local_mac); - if (err < 0) - memset(local_mac, 0, ETH_ALEN); - - path = fdt_get_alias(fdt, "ethernet"); - if (!path) - return; - - debug("ethernet alias found: %s\n", path); - - offset = fdt_path_offset(fdt, path); - if (offset < 0) { - printf("ethernet alias points to absent node %s\n", path); - return; - } - - if (is_valid_ethaddr(local_mac)) { - err = fdt_setprop(fdt, offset, "local-mac-address", local_mac, - ETH_ALEN); - if (!err) - debug("Local MAC address set: %pM\n", local_mac); - } - - if (eth_env_get_enetaddr("ethaddr", mac)) { - if (memcmp(local_mac, mac, ETH_ALEN) != 0) { - err = fdt_setprop(fdt, offset, "mac-address", mac, - ETH_ALEN); - if (!err) - debug("MAC address set: %pM\n", mac); - } - } -} - -static int ft_copy_carveout(void *dst, const void *src, const char *node) -{ - unsigned int index = 0; - int err; - - while (true) { - const char **compatibles = NULL; - unsigned int num_compatibles; - struct fdt_memory carveout; - unsigned long flags; - char *copy = NULL; - const char *name; - - err = fdtdec_get_carveout(src, node, "memory-region", index, - &carveout, &name, &compatibles, - &num_compatibles, &flags); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to get carveout for %s: %d\n", - node, err); - - return err; - } - - if (name) { - const char *ptr = strchr(name, '@'); - - if (ptr) { - copy = strndup(name, ptr - name); - name = copy; - } - } else { - name = "carveout"; - } - - err = fdtdec_set_carveout(dst, node, "memory-region", index, - &carveout, name, compatibles, - num_compatibles, flags); - if (err < 0) { - printf("failed to set carveout for %s: %d\n", node, - err); - return err; - } - - if (copy) - free(copy); - - index++; - } - - return 0; -} - -static void ft_carveout_setup(void *fdt) -{ - const void *cboot_fdt = (const void *)cboot_boot_x0; - static const char * const nodes[] = { - "/host1x@50000000/dc@54200000", - "/host1x@50000000/dc@54240000", - "/external-memory-controller@7001b000", - }; - unsigned int i; - int err; - - for (i = 0; i < ARRAY_SIZE(nodes); i++) { - printf("copying carveout for %s...\n", nodes[i]); - - err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]); - if (err < 0) { - if (err != -FDT_ERR_NOTFOUND) - printf("failed to copy carveout for %s: %d\n", - nodes[i], err); - - continue; - } - } -} +static const char * const nodes[] = { + "/host1x@50000000/dc@54200000", + "/host1x@50000000/dc@54240000", + "/external-memory-controller@7001b000", +}; int ft_board_setup(void *fdt, struct bd_info *bd) { ft_mac_address_setup(fdt); - ft_carveout_setup(fdt); + ft_carveout_setup(fdt, nodes, ARRAY_SIZE(nodes)); return 0; } From a0ba216ed420a8953f57f777256f310370b95338 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 3 Sep 2021 15:16:25 +0200 Subject: [PATCH 9/9] ARM: tegra: Copy memory-region-names property If multiple entries are present in the memory-region property, this new memory-region-names property can be used to specify names for each of them so that they can be more easily distinguished. Signed-off-by: Thierry Reding Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- arch/arm/mach-tegra/dt-setup.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-tegra/dt-setup.c b/arch/arm/mach-tegra/dt-setup.c index 894a6358a2..c11494722b 100644 --- a/arch/arm/mach-tegra/dt-setup.c +++ b/arch/arm/mach-tegra/dt-setup.c @@ -78,9 +78,11 @@ void ft_mac_address_setup(void *fdt) static int ft_copy_carveout(void *dst, const void *src, const char *node) { + const char *names = "memory-region-names"; struct fdt_memory carveout; unsigned int index = 0; - int err; + int err, offset, len; + const void *prop; while (true) { const char **compatibles = NULL; @@ -96,6 +98,8 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) if (err != -FDT_ERR_NOTFOUND) printf("failed to get carveout for %s: %d\n", node, err); + else + break; return err; } @@ -126,6 +130,31 @@ static int ft_copy_carveout(void *dst, const void *src, const char *node) index++; } + offset = fdt_path_offset(src, node); + if (offset < 0) { + debug("failed to find source offset for %s: %s\n", node, + fdt_strerror(err)); + return err; + } + + prop = fdt_getprop(src, offset, names, &len); + if (prop) { + offset = fdt_path_offset(dst, node); + if (offset < 0) { + debug("failed to find destination offset for %s: %s\n", + node, fdt_strerror(err)); + return err; + } + + err = fdt_setprop(dst, offset, "memory-region-names", prop, + len); + if (err < 0) { + debug("failed to copy \"%s\" property: %s\n", names, + fdt_strerror(err)); + return err; + } + } + return 0; }