SPI flash device on HiFive Unleashed has 32MiB Size.
This patch add SPI flash environment after U-Boot proper
partition with a size of 128KiB.
SPI flash partition layout(32MiB):
0 - 34 : reserved for GPT header
35 - 39 : unused
40 - 2087 : loader1 (SPL, FSBL)
2088 - 10279 : loader2 (U-Boot proper, U-Boot)
10280 - 10535 : environment
10536 - 65494 : rootfs
65528 - 65536 : distro script
Note: the loader1 must start from 40th sector even though
there are 6 free sectors prior since 40th sector is nearest
flash sector boundary.
Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
---
Changes for v2:
- move env offsets from generic to cpu Kconfig
arch/riscv/cpu/fu540/Kconfig | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
index 7a813a9ac8..417926d2cf 100644
--- a/arch/riscv/cpu/fu540/Kconfig
+++ b/arch/riscv/cpu/fu540/Kconfig
@@ -15,3 +15,16 @@ config SIFIVE_FU540
imply SPL_CPU_SUPPORT
imply SPL_OPENSBI
imply SPL_LOAD_FIT
+
+if CONFIG_ENV_IS_IN_SPI_FLASH
+
+config ENV_OFFSET
+ default 0x505000
+
+config ENV_SIZE
+ default 0x20000
+
+config ENV_SECT_SIZE
+ default 0x10000
+
+endif # CONFIG_ENV_IS_IN_SPI_FLASH
--
2.20.1
