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authorSiva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>2018-10-05 15:09:05 +0530
committerMichal Simek <michal.simek@xilinx.com>2018-10-16 16:53:24 +0200
commit5860bc16b918bb5456a4a77930eafd7c858f70db (patch)
treee76cec5af6ccc6548bf7b7059c6217bc328ac460 /arch/arm/cpu
parent12ad2994a5f01f949c3865851898bdae5ded1ddc (diff)
arm64: zynqmp: Add new command for TCM initialization
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>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv8/zynqmp/cpu.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c
index 3ed631e505..4ee8e3f627 100644
--- a/arch/arm/cpu/armv8/zynqmp/cpu.c
+++ b/arch/arm/cpu/armv8/zynqmp/cpu.c
@@ -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);