[PATCH v2 10/19] arm: mach-k3: j7200: Add support for storing extended boot info from ROM

[Lokesh Vutla]

Starting J7200 SoC, ROM supports for loading sysfw directly from boot
image. ROM passes this information on number of images that are loaded
to bootloader at certain location. Add support for storing this
information before it gets corrupted.

Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
Reviewed-by: Suman Anna <s-anna at ti.com>
---
 arch/arm/mach-k3/include/mach/hardware.h       | 7 +++++++
 arch/arm/mach-k3/include/mach/j721e_hardware.h | 3 +++
 arch/arm/mach-k3/j721e_init.c                  | 7 +++++--
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/include/mach/hardware.h b/arch/arm/mach-k3/include/mach/hardware.h
index 0ad761418b..02b3df0e1b 100644
--- a/arch/arm/mach-k3/include/mach/hardware.h
+++ b/arch/arm/mach-k3/include/mach/hardware.h
@@ -21,4 +21,11 @@
 #define JTAG_ID_PARTNO_SHIFT	12
 #define JTAG_ID_PARTNO_MASK	(0xffff << 12)
 
+#define K3_ROM_BOOT_HEADER_MAGIC	"EXTBOOT"
+
+struct rom_extended_boot_data {
+	char header[8];
+	u32 num_components;
+};
+
 #endif /* _ASM_ARCH_HARDWARE_H_ */
diff --git a/arch/arm/mach-k3/include/mach/j721e_hardware.h b/arch/arm/mach-k3/include/mach/j721e_hardware.h
index 19873d6e28..b98f0a82f1 100644
--- a/arch/arm/mach-k3/include/mach/j721e_hardware.h
+++ b/arch/arm/mach-k3/include/mach/j721e_hardware.h
@@ -51,6 +51,9 @@
 #define CTRLMMR_LOCK_KICK1				0x0100c
 #define CTRLMMR_LOCK_KICK1_UNLOCK_VAL			0xd172bc5a
 
+/* ROM HANDOFF Structure location */
+#define ROM_ENTENDED_BOOT_DATA_INFO			0x41cffb00
+
 /* MCU SCRATCHPAD usage */
 #define TI_SRAM_SCRATCH_BOARD_EEPROM_START	CONFIG_SYS_K3_MCU_SCRATCHPAD_BASE
 
diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 63a31c18ce..6246de3a26 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -126,10 +126,13 @@ void k3_mmc_restart_clock(void)
  * it to the .data section.
  */
 u32 bootindex __attribute__((section(".data")));
+static struct rom_extended_boot_data bootdata __section(.data);
 
-static void store_boot_index_from_rom(void)
+static void store_boot_info_from_rom(void)
 {
 	bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
+	memcpy(&bootdata, (uintptr_t *)ROM_ENTENDED_BOOT_DATA_INFO,
+	       sizeof(struct rom_extended_boot_data));
 }
 
 void board_init_f(ulong dummy)
@@ -142,7 +145,7 @@ void board_init_f(ulong dummy)
 	 * Cannot delay this further as there is a chance that
 	 * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
 	 */
-	store_boot_index_from_rom();
+	store_boot_info_from_rom();
 
 	/* Make all control module registers accessible */
 	ctrl_mmr_unlock();
-- 
2.23.0