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riscv: qemu: support booting Linux

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Support booting Linux (as payload of BBL) from FIT images. For this, the
default CONFIG_SYS_BOOTM_LEN is increased to 16 MB, and the environment
variables fdt_high and initrd_high are set to mark the device tree and
initrd as in-place.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Lukas Auer 2018-11-22 11:26:31 +01:00 committed by Andes
parent 6e10e94ff7
commit 52b984369f
3 changed files with 8 additions and 0 deletions
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1
configs/qemu-riscv32_defconfig
View file

@ -1,6 +1,7 @@
CONFIG_RISCV=y
CONFIG_TARGET_QEMU_VIRT=y
CONFIG_NR_DRAM_BANKS=1
CONFIG_FIT=y
CONFIG_DISPLAY_CPUINFO=y
CONFIG_DISPLAY_BOARDINFO=y
CONFIG_OF_PRIOR_STAGE=y

1
configs/qemu-riscv64_defconfig
View file

@ -2,6 +2,7 @@ CONFIG_RISCV=y
CONFIG_TARGET_QEMU_VIRT=y
CONFIG_ARCH_RV64I=y
CONFIG_NR_DRAM_BANKS=1
CONFIG_FIT=y
CONFIG_DISPLAY_CPUINFO=y
CONFIG_DISPLAY_BOARDINFO=y
CONFIG_OF_PRIOR_STAGE=y

6
include/configs/qemu-riscv.h
View file

@ -15,7 +15,13 @@
#define CONFIG_SYS_MALLOC_LEN SZ_8M
#define CONFIG_SYS_BOOTM_LEN SZ_16M
/* Environment options */
#define CONFIG_ENV_SIZE SZ_4K
#define CONFIG_EXTRA_ENV_SETTINGS \
"fdt_high=0xffffffffffffffff\0" \
"initrd_high=0xffffffffffffffff\0"
#endif /* __CONFIG_H */