[PATCH 08/11] imx8mn/imx8mp: override env_get_offset and env_get_location

[peng.fan at nxp.com]

From: Ye Li <ye.li at nxp.com>

To use one defconfig for all boot device, we have to runtime set
env offset and return env medium according to the boot device.
This patch overrides the env_get_offset and env_get_location to
implement the feature.

Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/mach-imx/imx8m/soc.c | 59 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
index f74a343ed8..9517a7cfcf 100644
--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -20,6 +20,8 @@
 #include <asm/armv8/mmu.h>
 #include <dm/uclass.h>
 #include <efi_loader.h>
+#include <env.h>
+#include <env_internal.h>
 #include <errno.h>
 #include <fdt_support.h>
 #include <fsl_wdog.h>
@@ -616,3 +618,60 @@ void do_error(struct pt_regs *pt_regs, unsigned int esr)
 }
 #endif
 #endif
+
+#if defined(CONFIG_IMX8MN) || defined(CONFIG_IMX8MP)
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	enum boot_device dev = get_boot_device();
+	enum env_location env_loc = ENVL_UNKNOWN;
+
+	if (prio)
+		return env_loc;
+
+	switch (dev) {
+#ifdef CONFIG_ENV_IS_IN_SPI_FLASH
+	case QSPI_BOOT:
+		env_loc = ENVL_SPI_FLASH;
+		break;
+#endif
+#ifdef CONFIG_ENV_IS_IN_NAND
+	case NAND_BOOT:
+		env_loc = ENVL_NAND;
+		break;
+#endif
+#ifdef CONFIG_ENV_IS_IN_MMC
+	case SD1_BOOT:
+	case SD2_BOOT:
+	case SD3_BOOT:
+	case MMC1_BOOT:
+	case MMC2_BOOT:
+	case MMC3_BOOT:
+		env_loc =  ENVL_MMC;
+		break;
+#endif
+	default:
+#if defined(CONFIG_ENV_IS_NOWHERE)
+		env_loc = ENVL_NOWHERE;
+#endif
+		break;
+	}
+
+	return env_loc;
+}
+
+#ifndef ENV_IS_EMBEDDED
+long long env_get_offset(long long defautl_offset)
+{
+	enum boot_device dev = get_boot_device();
+
+	switch (dev) {
+	case NAND_BOOT:
+		return (60 << 20);  /* 60MB offset for NAND */
+	default:
+		break;
+	}
+
+	return defautl_offset;
+}
+#endif
+#endif
-- 
2.16.4