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riscv: qemu: Implement is_flash_available() for MTD NOR

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Currently, if MTD NOR is enabled then U-Boot tries to issue flash
commands even when CFI flash DT node is not present. This causes
access fault on RISC-V emulators or ISS which do not emulate CFI
flash. To handle this issue, we implement is_flash_available() for
qemu-riscv board which will return 1 only if CFI flash DT node is
present.

Fixes: d248627f9d ("riscv: qemu: Enable MTD NOR flash support")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Anup Patel 2022-01-27 11:41:09 +05:30 committed by Leo Yu-Chi Liang
parent be7ce1a818
commit ef19131b80
1 changed files with 12 additions and 0 deletions
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12
board/emulation/qemu-riscv/qemu-riscv.c
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@ -5,6 +5,7 @@
#include <common.h>
#include <dm.h>
#include <dm/ofnode.h>
#include <env.h>
#include <fdtdec.h>
#include <image.h>
@ -16,6 +17,17 @@
DECLARE_GLOBAL_DATA_PTR;
#if IS_ENABLED(CONFIG_MTD_NOR_FLASH)
int is_flash_available(void)
{
if (!ofnode_equal(ofnode_by_compatible(ofnode_null(), "cfi-flash"),
ofnode_null()))
return 1;
return 0;
}
#endif
int board_init(void)
{
/*