[PATCH v2 2/3] Kconfig: j721s2: Change K3_MCU_SCRATCHPAD_BASE to non firewalled region

[Tom Rini]

On Thu, May 04, 2023 at 11:07:07AM +0530, Manorit Chawdhry wrote:

> On K3 HS-SE devices all the firewalls are locked by default
> until sysfw comes up. Rom configures some of the firewall for its usage
> along with the SRAM for R5 but the PSRAM region is still locked.
> 
> The K3 MCU Scratchpad for j721s2 was set to a PSRAM region triggering the
> firewall exception before sysfw came up. The exception started happening
> after adding multi dtb support that accesses the scratchpad for reading
> EEPROM contents.
> 
> Old map:
> ┌─────────────────────────────────────┐ 0x41c00000
> │                 SPL                 │
> ├─────────────────────────────────────┤ 0x41c61f20 (approx)
> │                STACK                │
> ├─────────────────────────────────────┤ 0x41c65f20
> │             Global data             │
> │  sizeof(struct global_data) = 0xd8  │
> ├─────────────────────────────────────┤ gd->malloc_base = 0x41c66000
> │                HEAP                 │
> │  CONFIG_SYS_MALLOC_F_LEN = 0x10000  │
> ├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR
> │               SPL BSS               │ (0x41c76000)
> │  CONFIG_SPL_BSS_MAX_SIZE = 0xA000   │
> ├─────────────────────────────────────┤ (0x41c80000)
> │               DM DATA               │
> ├─────────────────────────────────────┤ (0x41c84130) (approx)
> │                EMPTY                │
> └─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX
> 				        (0x41cffbfc)
> 
> New map:
> ┌─────────────────────────────────────┐ 0x41c00000
> │                 SPL                 │
> ├─────────────────────────────────────┤ 0x41c61f20 (approx)
> │                STACK                │
> ├─────────────────────────────────────┤ 0x41c65f20
> │             Global data             │
> │  sizeof(struct global_data) = 0xd8  │
> ├─────────────────────────────────────┤ gd->malloc_base = 0x41c66000
> │                HEAP                 │
> │  CONFIG_SYS_MALLOC_F_LEN = 0x10000  │
> ├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR
> │               SPL BSS               │ (0x41c76000)
> │  CONFIG_SPL_BSS_MAX_SIZE = 0xA000   │
> ├─────────────────────────────────────┤ (0x41c80000)
> │               DM DATA               │
> ├─────────────────────────────────────┤ (0x41c84130) (approx)
> │                EMPTY                │
> ├─────────────────────────────────────┤ SYS_K3_MCU_SCRATCHPAD_BASE
> │              SCRATCHPAD             │ (0x41cff9fc)
> │ SYS_K3_MCU_SCRATCHPAD_SIZE = 0x200  │
> └─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX
> 				        (0x41cffbfc)
> 
> Reviewed-by: Kamlesh Gurudasani <kamlesh at ti.com>
> Signed-off-by: Manorit Chawdhry <m-chawdhry at ti.com>

Applied to u-boot/master, thanks!

-- 
Tom
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