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spl: fit: implement fdt_record_loadable

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During the loading of more complex FIT images (e.g. when the invoked
next stage needs to find additional firmware for a power-management
core... or if there are multiple images for different privilege levels
started in parallel), it is helpful to create a record of what images
are loaded where: if a FDT is loaded for one of the next stages, it
can be used to convey the status and location of loadables.

This adds a fdt_record_loadable() function that can be invoked to
record the status of each loadable below the /fit-images path.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-09-13 21:29:33 +02:00
parent d879616e9e
commit 9f45aeb937
2 changed files with 59 additions and 0 deletions
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39
common/fdt_support.c
View File

@ -410,6 +410,45 @@ static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
return p - (char *)buf;
}
int fdt_record_loadable(void *blob, u32 index, const char *name,
uintptr_t load_addr, u32 size, uintptr_t entry_point,
const char *type, const char *os)
{
int err, node;
err = fdt_check_header(blob);
if (err < 0) {
printf("%s: %s\n", __func__, fdt_strerror(err));
return err;
}
/* find or create "/fit-images" node */
node = fdt_find_or_add_subnode(blob, 0, "fit-images");
if (node < 0)
return node;
/* find or create "/fit-images/<name>" node */
node = fdt_find_or_add_subnode(blob, node, name);
if (node < 0)
return node;
/*
* We record these as 32bit entities, possibly truncating addresses.
* However, spl_fit.c is not 64bit safe either: i.e. we should not
* have an issue here.
*/
fdt_setprop_u32(blob, node, "load-addr", load_addr);
if (entry_point != -1)
fdt_setprop_u32(blob, node, "entry-point", entry_point);
fdt_setprop_u32(blob, node, "size", size);
if (type)
fdt_setprop_string(blob, node, "type", type);
if (os)
fdt_setprop_string(blob, node, "os", os);
return node;
}
#ifdef CONFIG_NR_DRAM_BANKS
#define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS
#else

20
include/fdt_support.h
View File

@ -133,6 +133,26 @@ void fdt_fixup_crypto_node(void *blob, int sec_rev);
static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
#endif
#if CONFIG_IS_ENABLED(LOAD_FIT)
/**
* Record information about a processed loadable in /fit-images (creating
* /fit-images if necessary).
*
* @param blob FDT blob to update
* @param index index of this loadable
* @param name name of the loadable
* @param load_addr address the loadable was loaded to
* @param size number of bytes loaded
* @param entry_point entry point (if specified, otherwise pass -1)
* @param type type (if specified, otherwise pass NULL)
* @param os os-type (if specified, otherwise pass NULL)
* @return 0 if ok, or -1 or -FDT_ERR_... on error
*/
int fdt_record_loadable(void *blob, u32 index, const char *name,
uintptr_t load_addr, u32 size, uintptr_t entry_point,
const char *type, const char *os);
#endif
#ifdef CONFIG_PCI
#include <pci.h>
int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);