Introduce Verifying Program Loader (VPL)
Add support for VPL, a new phase of U-Boot. This runs after TPL. It is responsible for selecting which SPL binary to run, based on a verified-boot process. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
Tom Rini
parent
d3eba95a7e
commit
f86ca5ad8f
14
Makefile
14
Makefile
@ -911,6 +911,12 @@ else
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TPL_SIZE_CHECK =
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endif
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ifneq ($(CONFIG_VPL_SIZE_LIMIT),0x0)
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VPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT))
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else
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VPL_SIZE_CHECK =
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endif
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# Statically apply RELA-style relocations (currently arm64 only)
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# This is useful for arm64 where static relocation needs to be performed on
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# the raw binary, but certain simulators only accept an ELF file (but don't
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@ -951,6 +957,7 @@ INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
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endif
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endif
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INPUTS-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
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INPUTS-$(CONFIG_VPL) += vpl/u-boot-vpl.bin
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# Allow omitting the .dtb output if it is not normally used
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INPUTS-$(CONFIG_OF_SEPARATE) += $(if $(CONFIG_OF_OMIT_DTB),dts/dt.dtb,u-boot.dtb)
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@ -2117,6 +2124,13 @@ tpl/u-boot-tpl.bin: tpl/u-boot-tpl
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tpl/u-boot-tpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
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$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
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vpl/u-boot-vpl.bin: vpl/u-boot-vpl
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@:
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$(VPL_SIZE_CHECK)
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vpl/u-boot-vpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
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$(Q)$(MAKE) obj=vpl -f $(srctree)/scripts/Makefile.spl all
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TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
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FIND := find
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@ -1,4 +1,4 @@
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menu "SPL / TPL"
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menu "SPL / TPL / VPL"
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config SUPPORT_SPL
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bool
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@ -6,6 +6,9 @@ config SUPPORT_SPL
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config SUPPORT_TPL
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bool
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config SUPPORT_VPL
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bool
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config SPL_DFU_NO_RESET
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bool
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@ -302,6 +305,16 @@ config SPL_READ_ONLY
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writeable memory) of anything it wants to modify, such as
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device-private data.
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config TPL_SEPARATE_BSS
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bool "BSS section is in a different memory region from text"
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default y if SPL_SEPARATE_BSS
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help
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Some platforms need a large BSS region in TPL and can provide this
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because RAM is already set up. In this case BSS can be moved to RAM.
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This option should then be enabled so that the correct device tree
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location is used. Normally we put the device tree at the end of BSS
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but with this option enabled, it goes at _image_binary_end.
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config SPL_BANNER_PRINT
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bool "Enable output of the SPL banner 'U-Boot SPL ...'"
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default y
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@ -61,6 +61,11 @@ binman_sym_declare(ulong, u_boot_spl, image_pos);
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binman_sym_declare(ulong, u_boot_spl, size);
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#endif
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#ifdef CONFIG_VPL
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binman_sym_declare(ulong, u_boot_vpl, image_pos);
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binman_sym_declare(ulong, u_boot_vpl, size);
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#endif
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/* Define board data structure */
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static struct bd_info bdata __attribute__ ((section(".data")));
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@ -146,14 +151,22 @@ void spl_fixup_fdt(void *fdt_blob)
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#if CONFIG_IS_ENABLED(BINMAN_SYMBOLS)
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ulong spl_get_image_pos(void)
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{
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return spl_phase() == PHASE_TPL ?
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#ifdef CONFIG_VPL
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if (spl_next_phase() == PHASE_VPL)
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return binman_sym(ulong, u_boot_vpl, image_pos);
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#endif
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return spl_next_phase() == PHASE_SPL ?
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binman_sym(ulong, u_boot_spl, image_pos) :
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binman_sym(ulong, u_boot_any, image_pos);
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}
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ulong spl_get_image_size(void)
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{
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return spl_phase() == PHASE_TPL ?
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#ifdef CONFIG_VPL
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if (spl_next_phase() == PHASE_VPL)
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return binman_sym(ulong, u_boot_vpl, size);
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#endif
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return spl_next_phase() == PHASE_SPL ?
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binman_sym(ulong, u_boot_spl, size) :
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binman_sym(ulong, u_boot_any, size);
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}
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@ -161,7 +174,11 @@ ulong spl_get_image_size(void)
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ulong spl_get_image_text_base(void)
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{
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return spl_phase() == PHASE_TPL ? CONFIG_SPL_TEXT_BASE :
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#ifdef CONFIG_VPL
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if (spl_next_phase() == PHASE_VPL)
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return CONFIG_VPL_TEXT_BASE;
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#endif
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return spl_next_phase() == PHASE_SPL ? CONFIG_SPL_TEXT_BASE :
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CONFIG_SYS_TEXT_BASE;
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}
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@ -466,6 +483,8 @@ static enum bootstage_id get_bootstage_id(bool start)
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if (IS_ENABLED(CONFIG_TPL_BUILD) && phase == PHASE_TPL)
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return start ? BOOTSTAGE_ID_START_TPL : BOOTSTAGE_ID_END_TPL;
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else if (IS_ENABLED(CONFIG_VPL_BUILD) && phase == PHASE_VPL)
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return start ? BOOTSTAGE_ID_START_VPL : BOOTSTAGE_ID_END_VPL;
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else
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return start ? BOOTSTAGE_ID_START_SPL : BOOTSTAGE_ID_END_SPL;
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}
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@ -83,7 +83,12 @@ U-Boot Phases
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U-Boot boots through the following phases:
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TPL
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Very early init, as tiny as possible. This loads SPL.
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Very early init, as tiny as possible. This loads SPL (or VPL if enabled).
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VPL
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Optional verification step, which can select one of several SPL binaries,
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if A/B verified boot is enabled. Implementation of the VPL logic is
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work-in-progress. For now it just boots into SPL.
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SPL
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Secondary program loader. Sets up SDRAM and loads U-Boot proper. It may also
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@ -38,6 +38,7 @@ obj-$(CONFIG_XEN) += xen/
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obj-$(CONFIG_$(SPL_)FPGA) += fpga/
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ifndef CONFIG_TPL_BUILD
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ifndef CONFIG_VPL_BUILD
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ifdef CONFIG_SPL_BUILD
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obj-$(CONFIG_SPL_CPU) += cpu/
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@ -60,6 +61,7 @@ obj-$(CONFIG_SPL_SATA) += ata/ scsi/
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obj-$(CONFIG_HAVE_BLOCK_DEVICE) += block/
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obj-$(CONFIG_SPL_THERMAL) += thermal/
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endif
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endif
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endif
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@ -176,6 +176,8 @@ enum bootstage_id {
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BOOTSTAGE_ID_END_TPL,
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BOOTSTAGE_ID_START_SPL,
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BOOTSTAGE_ID_END_SPL,
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BOOTSTAGE_ID_START_VPL,
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BOOTSTAGE_ID_END_VPL,
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BOOTSTAGE_ID_START_UBOOT_F,
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BOOTSTAGE_ID_START_UBOOT_R,
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BOOTSTAGE_ID_USB_START,
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@ -38,6 +38,8 @@
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#define _CONFIG_PREFIX TOOLS_
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#elif defined(CONFIG_TPL_BUILD)
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#define _CONFIG_PREFIX TPL_
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#elif defined(CONFIG_VPL_BUILD)
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#define _CONFIG_PREFIX VPL_
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#elif defined(CONFIG_SPL_BUILD)
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#define _CONFIG_PREFIX SPL_
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#else
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@ -54,6 +56,7 @@
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* CONFIG_FOO if CONFIG_SPL_BUILD is undefined,
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* CONFIG_SPL_FOO if CONFIG_SPL_BUILD is defined.
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* CONFIG_TPL_FOO if CONFIG_TPL_BUILD is defined.
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* CONFIG_VPL_FOO if CONFIG_VPL_BUILD is defined.
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*/
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#define CONFIG_VAL(option) config_val(option)
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@ -62,6 +62,7 @@ static inline bool u_boot_first_phase(void)
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enum u_boot_phase {
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PHASE_NONE, /* Invalid phase, signifying before U-Boot */
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PHASE_TPL, /* Running in TPL */
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PHASE_VPL, /* Running in VPL */
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PHASE_SPL, /* Running in SPL */
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PHASE_BOARD_F, /* Running in U-Boot before relocation */
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PHASE_BOARD_R, /* Running in U-Boot after relocation */
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@ -114,7 +115,9 @@ static inline enum u_boot_phase spl_phase(void)
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{
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#ifdef CONFIG_TPL_BUILD
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return PHASE_TPL;
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#elif CONFIG_SPL_BUILD
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#elif defined(CONFIG_VPL_BUILD)
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return PHASE_VPL;
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#elif defined(CONFIG_SPL_BUILD)
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return PHASE_SPL;
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#else
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DECLARE_GLOBAL_DATA_PTR;
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@ -136,10 +139,15 @@ static inline enum u_boot_phase spl_prev_phase(void)
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{
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#ifdef CONFIG_TPL_BUILD
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return PHASE_NONE;
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#elif defined(CONFIG_VPL_BUILD)
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return PHASE_TPL; /* VPL requires TPL */
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#elif defined(CONFIG_SPL_BUILD)
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return IS_ENABLED(CONFIG_TPL) ? PHASE_TPL : PHASE_NONE;
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return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL :
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IS_ENABLED(CONFIG_TPL) ? PHASE_TPL :
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PHASE_NONE;
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#else
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return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL : PHASE_NONE;
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return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL :
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PHASE_NONE;
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#endif
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}
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@ -152,6 +160,8 @@ static inline enum u_boot_phase spl_prev_phase(void)
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static inline enum u_boot_phase spl_next_phase(void)
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{
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#ifdef CONFIG_TPL_BUILD
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return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL : PHASE_SPL;
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#elif defined(CONFIG_VPL_BUILD)
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return PHASE_SPL;
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#else
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return PHASE_BOARD_F;
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@ -168,6 +178,8 @@ static inline const char *spl_phase_name(enum u_boot_phase phase)
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switch (phase) {
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case PHASE_TPL:
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return "TPL";
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case PHASE_VPL:
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return "VPL";
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case PHASE_SPL:
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return "SPL";
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case PHASE_BOARD_F:
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@ -189,6 +201,8 @@ static inline const char *spl_phase_prefix(enum u_boot_phase phase)
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switch (phase) {
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case PHASE_TPL:
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return "tpl";
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case PHASE_VPL:
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return "vpl";
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case PHASE_SPL:
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return "spl";
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case PHASE_BOARD_F:
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@ -203,6 +217,8 @@ static inline const char *spl_phase_prefix(enum u_boot_phase phase)
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#ifdef CONFIG_SPL_BUILD
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# ifdef CONFIG_TPL_BUILD
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# define SPL_TPL_NAME "TPL"
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# elif defined(CONFIG_VPL_BUILD)
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# define SPL_TPL_NAME "VPL"
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# else
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# define SPL_TPL_NAME "SPL"
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# endif
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@ -322,11 +322,15 @@ endif
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ifdef CONFIG_SPL_BUILD
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SPL_ := SPL_
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ifeq ($(CONFIG_VPL_BUILD),y)
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SPL_TPL_ := VPL_
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else
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ifeq ($(CONFIG_TPL_BUILD),y)
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SPL_TPL_ := TPL_
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else
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SPL_TPL_ := SPL_
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endif
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endif
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else
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SPL_ :=
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SPL_TPL_ :=
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@ -18,6 +18,10 @@ ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && ec
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__all: tpl/include/autoconf.mk
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endif
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ifeq ($(shell grep -q '^CONFIG_VPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
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__all: vpl/include/autoconf.mk
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endif
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include include/config/auto.conf
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include scripts/Kbuild.include
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@ -85,6 +89,10 @@ tpl/u-boot.cfg: include/config.h FORCE
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$(Q)mkdir -p $(dir $@)
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$(call cmd,u_boot_cfg,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD)
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vpl/u-boot.cfg: include/config.h FORCE
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$(Q)mkdir -p $(dir $@)
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$(call cmd,u_boot_cfg,-DCONFIG_SPL_BUILD -DCONFIG_VPL_BUILD)
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include/autoconf.mk: u-boot.cfg
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$(call cmd,autoconf)
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@ -96,6 +104,10 @@ tpl/include/autoconf.mk: tpl/u-boot.cfg
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$(Q)mkdir -p $(dir $@)
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$(call cmd,autoconf)
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vpl/include/autoconf.mk: vpl/u-boot.cfg
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$(Q)mkdir -p $(dir $@)
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$(call cmd,autoconf)
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# include/config.h
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# Prior to Kconfig, it was generated by mkconfig. Now it is created here.
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define filechk_config_h
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@ -4,6 +4,9 @@
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# ==========================================================================
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# Modified for U-Boot
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prefix := vpl
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src := $(patsubst $(prefix)/%,%,$(obj))
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ifeq ($(obj),$(src))
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prefix := tpl
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src := $(patsubst $(prefix)/%,%,$(obj))
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ifeq ($(obj),$(src))
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@ -13,6 +16,7 @@ ifeq ($(obj),$(src))
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prefix := .
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endif
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endif
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endif
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PHONY := __build
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__build:
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@ -581,16 +581,21 @@ cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
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# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
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# pass removes various unused properties from the remaining nodes.
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# The output is typically a much smaller device tree file.
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ifeq ($(CONFIG_VPL_BUILD),y)
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fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
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else
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ifeq ($(CONFIG_TPL_BUILD),y)
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fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
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else
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fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
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endif
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endif
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quiet_cmd_fdtgrep = FDTGREP $@
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cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
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-n /chosen -n /config -O dtb | \
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$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
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-P u-boot,dm-pre-reloc -P u-boot,dm-spl -P u-boot,dm-tpl \
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-P u-boot,dm-vpl \
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$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
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# fdt_rm_props
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@ -27,8 +27,16 @@ UBOOTINCLUDE := -I$(obj)/include $(UBOOTINCLUDE)
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KBUILD_CPPFLAGS += -DCONFIG_SPL_BUILD
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ifeq ($(CONFIG_TPL_BUILD),y)
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KBUILD_CPPFLAGS += -DCONFIG_TPL_BUILD
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else
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ifeq ($(CONFIG_VPL_BUILD),y)
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KBUILD_CPPFLAGS += -DCONFIG_VPL_BUILD
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endif
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endif
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ifeq ($(CONFIG_VPL_BUILD),y)
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SPL_BIN := u-boot-vpl
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SPL_NAME := vpl
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else
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ifeq ($(CONFIG_TPL_BUILD),y)
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SPL_BIN := u-boot-tpl
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SPL_NAME := tpl
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@ -36,16 +44,21 @@ else
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SPL_BIN := u-boot-spl
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SPL_NAME := spl
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endif
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endif
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export SPL_NAME
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ifdef CONFIG_SPL_BUILD
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SPL_ := SPL_
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ifeq ($(CONFIG_VPL_BUILD),y)
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SPL_TPL_ := VPL_
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else
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ifeq ($(CONFIG_TPL_BUILD),y)
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SPL_TPL_ := TPL_
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else
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SPL_TPL_ := SPL_
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endif
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endif
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else
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SPL_ :=
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SPL_TPL_ :=
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@ -57,6 +70,9 @@ endif
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ifeq ($(obj)$(CONFIG_SUPPORT_TPL),tpl)
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$(error You cannot build TPL without enabling CONFIG_SUPPORT_TPL)
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endif
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ifeq ($(obj)$(CONFIG_SUPPORT_VPL),vpl)
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$(error You cannot build VPL without enabling CONFIG_SUPPORT_VPL)
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endif
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include $(srctree)/config.mk
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include $(srctree)/arch/$(ARCH)/Makefile
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@ -90,17 +106,12 @@ libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/
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endif
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libs-y += common/init/
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# Special handling for a few options which support SPL/TPL
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ifeq ($(CONFIG_TPL_BUILD),y)
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libs-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += boot/ common/ cmd/ env/
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libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/
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else
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libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += boot/ common/ cmd/ env/
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libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
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# Special handling for a few options which support SPL/TPL/VPL
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libs-$(CONFIG_$(SPL_TPL_)LIBCOMMON_SUPPORT) += boot/ common/ cmd/ env/
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libs-$(CONFIG_$(SPL_TPL_)LIBGENERIC_SUPPORT) += lib/
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ifdef CONFIG_SPL_FRAMEWORK
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libs-$(CONFIG_PARTITIONS) += disk/
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endif
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endif
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libs-y += drivers/
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libs-$(CONFIG_SPL_USB_GADGET) += drivers/usb/dwc3/
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@ -182,7 +193,7 @@ LDPPFLAGS += \
|
||||
sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
|
||||
|
||||
# Turn various CONFIG symbols into IMAGE symbols for easy reuse of
|
||||
# the scripts between SPL and TPL.
|
||||
# the scripts between SPL, TPL and VPL.
|
||||
ifneq ($(CONFIG_$(SPL_TPL_)MAX_SIZE),)
|
||||
LDPPFLAGS += -DIMAGE_MAX_SIZE=$(CONFIG_$(SPL_TPL_)MAX_SIZE)
|
||||
endif
|
||||
@ -264,6 +275,7 @@ ifeq ($(CONFIG_SYS_SOC),"at91")
|
||||
INPUTS-y += $(obj)/boot.bin
|
||||
endif
|
||||
|
||||
ifndef CONFIG_VPL_BUILD
|
||||
ifdef CONFIG_TPL_BUILD
|
||||
INPUTS-$(CONFIG_TPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-start16-tpl.bin \
|
||||
$(obj)/u-boot-x86-reset16-tpl.bin
|
||||
@ -271,6 +283,7 @@ else
|
||||
INPUTS-$(CONFIG_SPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-start16-spl.bin \
|
||||
$(obj)/u-boot-x86-reset16-spl.bin
|
||||
endif
|
||||
endif
|
||||
|
||||
INPUTS-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin
|
||||
INPUTS-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin
|
||||
@ -307,7 +320,7 @@ endif
|
||||
|
||||
ifneq ($(build_dtb),)
|
||||
$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \
|
||||
$(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \
|
||||
$(if $(CONFIG_$(SPL_TPL_)SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \
|
||||
$(FINAL_DTB_CONTAINER) FORCE
|
||||
$(call if_changed,cat)
|
||||
|
||||
@ -398,7 +411,7 @@ LDFLAGS_$(SPL_BIN) += $(call ld-option, --no-dynamic-linker)
|
||||
|
||||
LDFLAGS_$(SPL_BIN) += --build-id=none
|
||||
|
||||
# Pick the best-match (i.e. SPL_TEXT_BASE for SPL, TPL_TEXT_BASE for TPL)
|
||||
# Pick the best match (e.g. SPL_TEXT_BASE for SPL, TPL_TEXT_BASE for TPL)
|
||||
ifneq ($(CONFIG_$(SPL_TPL_)TEXT_BASE),)
|
||||
LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_$(SPL_TPL_)TEXT_BASE)
|
||||
endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user