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arm64: zynqmp: fix tcm initialization for mini u-boot

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Fix the issue introduced by commit fed064477c2c
("arm64: zynqmp: Print an error for split to lock mode switch").
The mini u-boot is hanging, because of the tcm is not initialized.
The mini u-boot is using the tcm to reserve the mmu table and
currently it is not initialized, so allowing u-boot to initialize
the tcm.

Signed-off-by: Padmarao Begari <padmarao.begari@amd.com>
Link: https://lore.kernel.org/r/20241011113435.1966604-1-padmarao.begari@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Padmarao Begari
2024-10-11 17:04:35 +05:30
committed by Michal Simek
parent 5b3c460617
commit dcded57038
2 changed files with 6 additions and 3 deletions
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7
arch/arm/mach-zynqmp/cpu.c
View File

@@ -112,7 +112,7 @@ u64 get_page_table_size(void)
return 0x14000;
}
#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU) || defined(CONFIG_DEFINE_TCM_OCM_MMAP)
#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
void tcm_init(u8 mode)
{
int ret;
@@ -134,7 +134,10 @@ void tcm_init(u8 mode)
#ifdef CONFIG_SYS_MEM_RSVD_FOR_MMU
int arm_reserve_mmu(void)
{
tcm_init(TCM_LOCK);
puts("WARNING: Initializing TCM overwrites TCM content\n");
initialize_tcm(TCM_LOCK);
memset((void *)ZYNQMP_TCM_BASE_ADDR, 0, ZYNQMP_TCM_SIZE);
gd->arch.tlb_size = PGTABLE_SIZE;
gd->arch.tlb_addr = ZYNQMP_TCM_BASE_ADDR;

2
arch/arm/mach-zynqmp/include/mach/sys_proto.h
View File

@@ -51,7 +51,7 @@ unsigned int zynqmp_get_silicon_version(void);
int check_tcm_mode(bool mode);
void initialize_tcm(bool mode);
void mem_map_fill(void);
#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU) || defined(CONFIG_DEFINE_TCM_OCM_MMAP)
#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
void tcm_init(u8 mode);
#endif