[U-Boot] [PATCH v5 06/14] fsl: ls-ch3: Copy Bootscript and header from NOR to DDR

Saksham Jain
2016-03-23T10:54:37Z

During Secure Boot, a bootscript is validated using its header. This
patch copies both these images to DDR from NOR and then validates and
executed them from DDR. (If NOR is the boot source for LS2080).

This copy step is done to make this step common across booting sources.
Because in case of non-xip memories (e.g. NAND, SD) it is neccessary to
copy both these images to DDR.

For other ARM Platforms (ls1043 and ls1020), header is not copied from
NOR to DDR (otherwise customers will need to modify the existing
headers).

Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Saksham Jain <saksham.jain@nxp.com>
---
Changes for v2:
- for platform such as ls1043 and ls1021, boot header in NOR.
Not copied to NOR. For them, fixed CONFIG_BOOTSCRIPT_HDR_ADDR
to CONFIG_BS_HDR_ADDR_FLASH.
Changes for v3:
- No change
Changes for v4:
-Cleaned up commit message
Changes for v5:
- Cleaned up commit message

arch/arm/include/asm/fsl_secure_boot.h | 28 +++++++++++++++++++++++++---
include/config_fsl_chain_trust.h | 11 +++++++----
2 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/arch/arm/include/asm/fsl_secure_boot.h b/arch/arm/include/asm/fsl_secure_boot.h
index 5575934..4d04eea 100644
--- a/arch/arm/include/asm/fsl_secure_boot.h
+++ b/arch/arm/include/asm/fsl_secure_boot.h
@@ -57,11 +57,33 @@
"setenv initrd_high 0xcfffffff;" \
"setenv hwconfig \'fsl_ddr:ctlr_intlv=null,bank_intlv=null\';"

-/* The address needs to be modified according to NOR memory map */
+/* Copying Bootscript and Header to DDR from NOR for LS2 and for rest, from
+ * Non-XIP Memory (Nand/SD)*/
+#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_LS2080A) ||\
+ defined(CONFIG_LS2085A)
+#define CONFIG_BOOTSCRIPT_COPY_RAM
+#endif
+/* The address needs to be modified according to NOR and DDR memory map */
#if defined(CONFIG_LS2080A) || defined(CONFIG_LS2085A)
-#define CONFIG_BOOTSCRIPT_HDR_ADDR 0x583920000
+#define CONFIG_BS_HDR_ADDR_FLASH 0x583920000
+#define CONFIG_BS_ADDR_FLASH 0x583900000
+#define CONFIG_BS_HDR_ADDR_RAM 0xa3920000
+#define CONFIG_BS_ADDR_RAM 0xa3900000
+#else
+#define CONFIG_BS_HDR_ADDR_FLASH 0x600a0000
+#define CONFIG_BS_ADDR_FLASH 0x60060000
+#define CONFIG_BS_HDR_ADDR_RAM 0xa0060000
+#define CONFIG_BS_ADDR_RAM 0xa0060000
+#endif
+
+#ifdef CONFIG_BOOTSCRIPT_COPY_RAM
+#define CONFIG_BOOTSCRIPT_HDR_ADDR CONFIG_BS_HDR_ADDR_RAM
+#define CONFIG_BS_HDR_SIZE 0x00002000
+#define CONFIG_BOOTSCRIPT_ADDR CONFIG_BS_ADDR_RAM
+#define CONFIG_BS_SIZE 0x00001000
#else
-#define CONFIG_BOOTSCRIPT_HDR_ADDR 0x600a0000
+#define CONFIG_BOOTSCRIPT_HDR_ADDR CONFIG_BS_HDR_ADDR_FLASH
+/* BS_HDR_SIZE, BOOTSCRIPT_ADDR and BS_SIZE are not required */
#endif

#include <config_fsl_chain_trust.h>
diff --git a/include/config_fsl_chain_trust.h b/include/config_fsl_chain_trust.h
index 45dda56..aa222bb 100644
--- a/include/config_fsl_chain_trust.h
+++ b/include/config_fsl_chain_trust.h
@@ -65,8 +65,6 @@
"esbc_halt\0"
#endif

-/* 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)";" \
@@ -76,14 +74,19 @@
"setenv bs_flash " __stringify(CONFIG_BS_ADDR_FLASH)";" \
"setenv bs_size " __stringify(CONFIG_BS_SIZE)";"

+/* For secure boot flow, default environment used will be used */
+#if defined(CONFIG_SYS_RAMBOOT)
#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 */
-
+#else
+#define CONFIG_BS_COPY_CMD \
+ "cp.b $bs_hdr_flash $bs_hdr_ram $bs_hdr_size ;" \
+ "cp.b $bs_flash $bs_ram $bs_size ;"
#endif
+#endif /* CONFIG_BOOTSCRIPT_COPY_RAM */

#ifndef CONFIG_BS_COPY_ENV
#define CONFIG_BS_COPY_ENV
--
1.8.1.4