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Revert "riscv: qemu: clear kernel-start/-end in device tree as workaround for BBL"

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The commit was added as a workaround required in QEMU when using BBL as
the supervisor binary interface (SBI) for Linux. We are now using
OpenSBI to provide the SBI, the workaround is therefore not required
anymore and can be removed.

This reverts commit 897206c5cc.

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 2020-04-14 23:24:46 +02:00 committed by Andes
parent 5988bb9dbf
commit 846b612014
2 changed files with 0 additions and 40 deletions
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1
board/emulation/qemu-riscv/Kconfig
View file

@ -43,7 +43,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
imply CMD_EXT4
imply CMD_FAT
imply BOARD_LATE_INIT
imply OF_BOARD_SETUP
imply SIFIVE_SERIAL
imply SMP
imply PCI

39
board/emulation/qemu-riscv/qemu-riscv.c
View file

@ -52,45 +52,6 @@ int board_late_init(void)
return 0;
}
/*
* QEMU specifies the location of Linux (supplied with the -kernel argument)
* in the device tree using the riscv,kernel-start and riscv,kernel-end
* properties. We currently rely on the SBI implementation of BBL to run
* Linux and therefore embed Linux as payload in BBL. This causes an issue,
* because BBL detects the kernel properties in the device tree and ignores
* the Linux payload as a result. To work around this issue, we clear the
* kernel properties before booting Linux.
*
* This workaround can be removed, once we do not require BBL for its SBI
* implementation anymore.
*/
int ft_board_setup(void *blob, bd_t *bd)
{
int chosen_offset, ret;
chosen_offset = fdt_path_offset(blob, "/chosen");
if (chosen_offset < 0)
return 0;
#ifdef CONFIG_ARCH_RV64I
ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-start", 0);
#else
ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-start", 0);
#endif
if (ret)
return ret;
#ifdef CONFIG_ARCH_RV64I
ret = fdt_setprop_u64(blob, chosen_offset, "riscv,kernel-end", 0);
#else
ret = fdt_setprop_u32(blob, chosen_offset, "riscv,kernel-end", 0);
#endif
if (ret)
return ret;
return 0;
}
#ifdef CONFIG_SPL
u32 spl_boot_device(void)
{