arm64: versal: Add new Kconfig SYS_MEM_RSVD_FOR_MMU
This patch adds new config option which is used for
reserving a specific memory for MMU Table and in this
case we are using TCM for that purpose.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/mach-versal/cpu.c b/arch/arm/mach-versal/cpu.c
index 1fd3c24..70c1908 100644
--- a/arch/arm/mach-versal/cpu.c
+++ b/arch/arm/mach-versal/cpu.c
@@ -7,6 +7,10 @@
#include <common.h>
#include <asm/armv8/mmu.h>
#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
static struct mm_region versal_mem_map[] = {
{
@@ -68,6 +72,17 @@
return 0x14000;
}
+#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU)
+int reserve_mmu(void)
+{
+ tcm_init(TCM_LOCK);
+ gd->arch.tlb_size = PGTABLE_SIZE;
+ gd->arch.tlb_addr = VERSAL_TCM_BASE_ADDR;
+
+ return 0;
+}
+#endif
+
#if defined(CONFIG_OF_BOARD)
void *board_fdt_blob_setup(void)
{