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configs: ast2600: Boot kernel FIT in DRAM

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AST2600 leverages the FIT hash/signature verification to fulfill
secure boot trust chain. To improve the performance and save SW
code size for those crypto operations, the two HW crypto engine,
HACE and ACRY, are enabled.

However, both of the engines can only access to data stored in
DRAM space. Therefore, we need to move the FIT image into DRAM
before the booting.

This patch update the CONFIG_BOOTCOMMAND to execute the pre-defined
ENV variable which consists of FIT image copy to memory and booting.

Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
This commit is contained in:
Chia-Wei Wang 2021-10-27 14:17:35 +08:00 committed by Tom Rini
parent 3aeb239f51
commit e3cdc2cbb1
2 changed files with 8 additions and 1 deletions
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2
configs/evb-ast2600_defconfig
View file

@ -27,7 +27,7 @@ CONFIG_SPL_LOAD_FIT_ADDRESS=0x10000
CONFIG_USE_BOOTARGS=y
CONFIG_BOOTARGS="console=ttyS4,115200n8 root=/dev/ram rw"
CONFIG_USE_BOOTCOMMAND=y
CONFIG_BOOTCOMMAND="bootm 20100000"
CONFIG_BOOTCOMMAND="run bootspi"
# CONFIG_DISPLAY_CPUINFO is not set
CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD=y
CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC=y

7
include/configs/evb_ast2600.h
View file

@ -14,7 +14,14 @@
#define CONFIG_SYS_LOAD_ADDR 0x83000000
/* Misc */
#define STR_HELPER(s) #s
#define STR(s) STR_HELPER(s)
#define CONFIG_EXTRA_ENV_SETTINGS \
"loadaddr=" STR(CONFIG_SYS_LOAD_ADDR) "\0" \
"bootspi=fdt addr 20100000 && fdt header get fitsize totalsize && " \
"cp.b 20100000 ${loadaddr} ${fitsize} && bootm; " \
"echo Error loading kernel FIT image\0" \
""
#endif /* __CONFIG_H */