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include: configs: am**x/j721e/j721s2_evm.h: Move the stack pointer init address in arm64

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Currently, in case of arm64 bootloader and U-Boot the stack pointer is
initialized at an offset of NON_SECURE_MSRAM_SIZE from arm64 SPL's text
base address. After jumping to arm64, execution is done out of DDR.
Therefore, having an offset corresponding to the size of MSRAM does not
have any significance.

Instead, initialize the stack pointer after an offset of 4MB from the SPL
text base address. This helps in allocating larger memory for stack.

  ┌────────────────────┐0x80080000
  │                    │
  │   arm64 SPL        │
  ├────────────────────┤
  │        ▲           │
  │        │           │
  │      STACK         │
  ├────────────────────┤0x80480000
  │ Memory for Load    │
  │ Buffer Allocation  │
  ├────────────────────┤0x80800000
  │                    │
  │    U-Boot Image    │
  │                    │
  └────────────────────┘

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
This commit is contained in:
Aswath Govindraju 2022-04-19 20:56:02 +05:30 committed by Tom Rini
parent 1a80ef5520
commit 56717a1388
4 changed files with 4 additions and 8 deletions
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3
include/configs/am64x_evm.h
View file

@ -24,8 +24,7 @@
#define CONFIG_SPL_MAX_SIZE CONFIG_SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
#if defined(CONFIG_TARGET_AM642_A53_EVM)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE - 4)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + SZ_4M)
#else
/*
* Maximum size in memory allocated to the SPL BSS. Keep it as tight as

3
include/configs/am65x_evm.h
View file

@ -19,8 +19,7 @@
/* SPL Loader Configuration */
#ifdef CONFIG_TARGET_AM654_A53_EVM
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + SZ_4M)
#else
/*
* Maximum size in memory allocated to the SPL BSS. Keep it as tight as

3
include/configs/j721e_evm.h
View file

@ -20,8 +20,7 @@
/* SPL Loader Configuration */
#if defined(CONFIG_TARGET_J721E_A72_EVM) || defined(CONFIG_TARGET_J7200_A72_EVM)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + SZ_4M)
#define CONFIG_SYS_UBOOT_BASE 0x50280000
/* Image load address in RAM for DFU boot*/
#else

3
include/configs/j721s2_evm.h
View file

@ -21,8 +21,7 @@
/* SPL Loader Configuration */
#if defined(CONFIG_TARGET_J721S2_A72_EVM) || defined(CONFIG_TARGET_J7200_A72_EVM)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE)
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + SZ_4M)
#define CONFIG_SYS_UBOOT_BASE 0x50280000
/* Image load address in RAM for DFU boot*/
#else