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riscv: qemu: Use different SYS_TEXT_BASE for S-mode

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When u-boot runs in S-mode, the M-mode runtime firmware
(BBL or equivalent) uses memory range in 0x80000000 to
0x80200000. Due to this, we cannot use 0x80000000 as
SYS_TEXT_BASE when running in S-mode. Instead for S-mode,
we use 0x80200000 as SYS_TEXT_BASE.

Even Linux RISC-V kernel ignores/reserves memory range
0x80000000 to 0x80200000 because it runs in S-mode.

Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
This commit is contained in:
Anup Patel 2018-12-03 10:57:41 +05:30 committed by Andes
parent d2db2a8fa4
commit ef8c3d3fce
1 changed files with 2 additions and 1 deletions
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3
board/emulation/qemu-riscv/Kconfig
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@ -13,7 +13,8 @@ config SYS_CONFIG_NAME
default "qemu-riscv"
config SYS_TEXT_BASE
default 0x80000000
default 0x80000000 if !RISCV_SMODE
default 0x80200000 if RISCV_SMODE
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y