On HS devices the 512b region of reset isolated memory called
MCU_PSRAM0 is firewalled by default. Until SYSFW is loaded we
cannot use this memory. It is only used to store a single value
left at the end of SRAM by ROM that will be needed later. Save
that value to a global variable stored in the .data section.
This section is used as .bss will be cleared between saving
this value and using it.
Signed-off-by: Andrew F. Davis <a...@ti.com>
---
arch/arm/mach-k3/am6_init.c | 8 +++-----
arch/arm/mach-k3/include/mach/am6_hardware.h | 3 ---
2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c
index a5553190b4..462538e45d 100644
--- a/arch/arm/mach-k3/am6_init.c
+++ b/arch/arm/mach-k3/am6_init.c
@@ -49,11 +49,11 @@ static void ctrl_mmr_unlock(void)
mmr_unlock(CTRL_MMR0_BASE, 7);
}
+u32 bootindex __attribute__((section(".data")));
+
static void store_boot_index_from_rom(void)
{
- u32 *boot_index = (u32 *)K3_BOOT_PARAM_TABLE_INDEX_VAL;
-
- *boot_index = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
+ bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
}
void board_init_f(ulong dummy)
@@ -94,7 +94,6 @@ u32 spl_boot_mode(const u32 boot_device)
{
#if defined(CONFIG_SUPPORT_EMMC_BOOT)
u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
- u32 bootindex = readl(K3_BOOT_PARAM_TABLE_INDEX_VAL);
u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;
@@ -170,7 +169,6 @@ static u32 __get_primary_bootmedia(u32 devstat)
u32 spl_boot_device(void)
{
u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
- u32 bootindex = readl(K3_BOOT_PARAM_TABLE_INDEX_VAL);
if (bootindex == K3_PRIMARY_BOOTMODE)
return __get_primary_bootmedia(devstat);
diff --git a/arch/arm/mach-k3/include/mach/am6_hardware.h
b/arch/arm/mach-k3/include/mach/am6_hardware.h
index b5244609af..3343233aa3 100644
--- a/arch/arm/mach-k3/include/mach/am6_hardware.h
+++ b/arch/arm/mach-k3/include/mach/am6_hardware.h
@@ -44,7 +44,4 @@
#define CTRLMMR_LOCK_KICK1 0x0100c
#define CTRLMMR_LOCK_KICK1_UNLOCK_VAL 0xd172bc5a
-/* MCU SCRATCHPAD usage */
-#define K3_BOOT_PARAM_TABLE_INDEX_VAL CONFIG_SYS_K3_MCU_SCRATCHPAD_BASE
-
#endif /* __ASM_ARCH_AM6_HARDWARE_H */
--
2.19.1
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