[PATCH 2/5] env: Enable SPI flash env for SiFive FU540

[Jagan Teki]

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

Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
 env/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/env/Kconfig b/env/Kconfig
index 0d6f559b39..67c88fd40b 100644
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -500,6 +500,7 @@ config ENV_OFFSET
 	default 0 if ARC
 	default 0x140000 if ARCH_AT91
 	default 0x260000 if ARCH_OMAP2PLUS
+	default 0x505000 if TARGET_SIFIVE_FU540
 	help
 	  Offset from the start of the device (or partition)
 
@@ -519,6 +520,7 @@ config ENV_SIZE
 	default 0x2000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
 	default 0x8000 if ARCH_ZYNQMP || ARCH_VERSAL
 	default 0x4000 if ARC
+	default 0x20000 if TARGET_SIFIVE_FU540
 	default 0x1f000
 	help
 	  Size of the environment storage area
@@ -529,6 +531,7 @@ config ENV_SECT_SIZE
 	default 0x2000 if ARCH_ROCKCHIP
 	default 0x40000 if ARCH_ZYNQMP || ARCH_VERSAL
 	default 0x20000 if ARCH_ZYNQ || ARCH_OMAP2PLUS || ARCH_AT91
+	default 0x10000 if TARGET_SIFIVE_FU540
 	help
 	  Size of the sector containing the environment.
 
-- 
2.17.1