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arm64: zynqmp: Add new command for TCM initialization

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This patch adds new zynqmp command "zynqmp tcminit mode" to
initialize TCM. TCM needs to be initialized before accessing
to avoid ECC errors. This new command helps to perform
the same. It also makes tcm_init() as global and uses it for
doing the TCM initialization.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu
2018-10-05 15:09:05 +05:30
committed by Michal Simek
parent 12ad2994a5
commit 5860bc16b9
3 changed files with 43 additions and 3 deletions
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6
arch/arm/cpu/armv8/zynqmp/cpu.c
View File

@@ -104,14 +104,16 @@ u64 get_page_table_size(void)
return 0x14000;
}
#ifdef CONFIG_SYS_MEM_RSVD_FOR_MMU
static void tcm_init(u8 mode)
#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU) || defined(CONFIG_DEFINE_TCM_OCM_MMAP)
void tcm_init(u8 mode)
{
puts("WARNING: Initializing TCM overwrites TCM content\n");
initialize_tcm(mode);
memset((void *)ZYNQMP_TCM_BASE_ADDR, 0, ZYNQMP_TCM_SIZE);
}
#endif
#ifdef CONFIG_SYS_MEM_RSVD_FOR_MMU
int reserve_mmu(void)
{
tcm_init(TCM_LOCK);

3
arch/arm/include/asm/arch-zynqmp/sys_proto.h
View File

@@ -68,5 +68,8 @@ int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3,
void initialize_tcm(bool mode);
void mem_map_fill(void);
int chip_id(unsigned char id);
#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU) || defined(CONFIG_DEFINE_TCM_OCM_MMAP)
void tcm_init(u8 mode);
#endif
#endif /* _ASM_ARCH_SYS_PROTO_H */