powerpc/mpc85xx: SECURE BOOT-Copy Boot Script on RAM

For running Chain of Trust when doing Secure Boot from NAND,
the Bootscript header and bootscript must be copied from NAND
to RAM(DDR).
The addresses and commands for the same have been defined.

Signed-off-by: Saksham Jain <saksham@freescale.com>
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/powerpc/include/asm/fsl_secure_boot.h

@@ -75,6 +75,18 @@
 #endif
 
 #ifndef CONFIG_FIT_SIGNATURE
+/* If Boot Script is not on NOR and is required to be copied on RAM */
+#ifdef CONFIG_BOOTSCRIPT_COPY_RAM
+#define CONFIG_BS_HDR_ADDR_RAM		0x00010000
+#define CONFIG_BS_HDR_ADDR_FLASH	0x00800000
+#define CONFIG_BS_HDR_SIZE		0x00002000
+#define CONFIG_BS_ADDR_RAM		0x00012000
+#define CONFIG_BS_ADDR_FLASH		0x00802000
+#define CONFIG_BS_SIZE			0x00001000
+
+#define CONFIG_BOOTSCRIPT_HDR_ADDR	CONFIG_BS_HDR_ADDR_RAM
+#else
+
 /* The bootscript header address is different for B4860 because the NOR
  * mapping is different on B4 due to reduced NOR size.
  */
@@ -90,6 +102,8 @@
 #define CONFIG_BOOTSCRIPT_HDR_ADDR	0xee020000
 #endif
 
+#endif
+
 #include <config_fsl_secboot.h>
 #endif
 

include/config_fsl_secboot.h

@@ -55,6 +55,22 @@
 
 /* For secure boot flow, default environment used will be used */
 #if defined(CONFIG_SYS_RAMBOOT)
+#ifdef CONFIG_BOOTSCRIPT_COPY_RAM
+#define CONFIG_BS_COPY_ENV \
+	"setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \
+	"setenv bs_hdr_flash " __stringify(CONFIG_BS_HDR_ADDR_FLASH)";" \
+	"setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \
+	"setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \
+	"setenv bs_flash " __stringify(CONFIG_BS_ADDR_FLASH)";" \
+	"setenv bs_size " __stringify(CONFIG_BS_SIZE)";"
+
+#if defined(CONFIG_RAMBOOT_NAND)
+#define CONFIG_BS_COPY_CMD \
+	"nand read $bs_hdr_ram $bs_hdr_flash $bs_hdr_size ;" \
+	"nand read $bs_ram $bs_flash $bs_size ;"
+#endif /* CONFIG_RAMBOOT_NAND */
+#endif /* CONFIG_BOOTSCRIPT_COPY_RAM */
+
 #if defined(CONFIG_RAMBOOT_SPIFLASH)
 #undef CONFIG_ENV_IS_IN_SPI_FLASH
 #elif defined(CONFIG_RAMBOOT_NAND)
@@ -68,6 +84,17 @@
 
 #define CONFIG_ENV_IS_NOWHERE
 
+#ifndef CONFIG_BS_COPY_ENV
+#define CONFIG_BS_COPY_ENV
+#endif
+
+#ifndef CONFIG_BS_COPY_CMD
+#define CONFIG_BS_COPY_CMD
+#endif
+
+#define CONFIG_SECBOOT_CMD	CONFIG_BS_COPY_ENV \
+				CONFIG_BS_COPY_CMD \
+				CONFIG_SECBOOT
 /*
  * We don't want boot delay for secure boot flow
  * before autoboot starts
@@ -75,7 +102,7 @@
 #undef CONFIG_BOOTDELAY
 #define CONFIG_BOOTDELAY	0
 #undef CONFIG_BOOTCOMMAND
-#define CONFIG_BOOTCOMMAND		CONFIG_SECBOOT
+#define CONFIG_BOOTCOMMAND		CONFIG_SECBOOT_CMD
 
 /*
  * CONFIG_ZERO_BOOTDELAY_CHECK should not be defined for

include/configs/corenet_ds.h

@@ -22,6 +22,7 @@
 #ifdef CONFIG_NAND
 #define CONFIG_RAMBOOT_NAND
 #endif
+#define CONFIG_BOOTSCRIPT_COPY_RAM
 #else
 #define CONFIG_RAMBOOT_TEXT_BASE	CONFIG_SYS_TEXT_BASE
 #define CONFIG_RESET_VECTOR_ADDRESS	0xfffffffc