SPL: P2020RDB: fix the problem booting from spi flash

There was no enough stack in SPL, so the buffer needed in SPL is to malloc
from memory pool and to repalce the temporary variable.
Signed-off-by: NYing Zhang <b40530@freescale.com>
Reviewed-by: NYork Sun <yorksun@freescale.com>

common/env_sf.c

@@ -299,13 +299,16 @@ int saveenv(void)
 
 void env_relocate_spec(void)
 {
-	char buf[CONFIG_ENV_SIZE];
 	int ret;
+	char *buf = NULL;
 
+	buf = (char *)malloc(CONFIG_ENV_SIZE);
 	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
 			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
 	if (!env_flash) {
 		set_default_env("!spi_flash_probe() failed");
+		if (buf)
+			free(buf);
 		return;
 	}
 
@@ -321,6 +324,8 @@ void env_relocate_spec(void)
 		gd->env_valid = 1;
 out:
 	spi_flash_free(env_flash);
+	if (buf)
+		free(buf);
 	env_flash = NULL;
 }
 #endif

include/configs/p1_p2_rdb_pc.h

@@ -579,11 +579,15 @@
 #define CONFIG_SYS_INIT_L2_ADDR_PHYS	CONFIG_SYS_INIT_L2_ADDR
 #define CONFIG_SYS_INIT_L2_END	(CONFIG_SYS_INIT_L2_ADDR + CONFIG_SYS_L2_SIZE)
 #define CONFIG_SPL_RELOC_TEXT_BASE	0xf8f81000
-#define CONFIG_SPL_RELOC_STACK		(CONFIG_SYS_INIT_L2_ADDR + 128 * 1024)
-#define CONFIG_SPL_RELOC_STACK_SIZE	(32 << 10)
-#define CONFIG_SPL_RELOC_MALLOC_ADDR	(CONFIG_SYS_INIT_L2_ADDR + 160 * 1024)
-#define CONFIG_SPL_RELOC_MALLOC_SIZE	(96 << 10)
 #define CONFIG_SPL_GD_ADDR		(CONFIG_SYS_INIT_L2_ADDR + 112 * 1024)
+#define CONFIG_SPL_RELOC_STACK		(CONFIG_SYS_INIT_L2_ADDR + 116 * 1024)
+#define CONFIG_SPL_RELOC_STACK_SIZE	(32 << 10)
+#define CONFIG_SPL_RELOC_MALLOC_ADDR	(CONFIG_SYS_INIT_L2_ADDR + 148 * 1024)
+#if defined(CONFIG_P2020RDB)
+#define CONFIG_SPL_RELOC_MALLOC_SIZE	(364 << 10)
+#else
+#define CONFIG_SPL_RELOC_MALLOC_SIZE	(108 << 10)
+#endif
 #elif defined(CONFIG_NAND)
 #ifdef CONFIG_TPL_BUILD
 #define CONFIG_SYS_INIT_L2_ADDR		0xf8f80000