arm64: zynqmp: Provide a Kconfig option to disable OCM and TCM MMU mapping

This patch provides an option to enable/disable OCM and TCM memory into MMU
table with corresponding memory attributes.

The same change was done for ZynqMP by commit 189bec47ab1f
("arm64: zynqmp: Provide a Kconfig option to define OCM and TCM in MMU")

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/arm/mach-versal/Kconfig b/arch/arm/mach-versal/Kconfig
index 26d1756..06a0352 100644 (file)
--- a/arch/arm/mach-versal/Kconfig
+++ b/arch/arm/mach-versal/Kconfig
@@ -54,4 +54,11 @@ config SYS_MEM_RSVD_FOR_MMU
          MMU table than the one which will be allocated during
          relocation.
 
+config DEFINE_TCM_OCM_MMAP
+       bool "Define TCM and OCM memory in MMU Table"
+       default y if MP
+       help
+         This option if enabled defines the TCM and OCM memory and its
+         memory attributes in MMU table entry.
+
 endif

diff --git a/arch/arm/mach-versal/cpu.c b/arch/arm/mach-versal/cpu.c
index dc6a920..f0d047d 100644 (file)
--- a/arch/arm/mach-versal/cpu.c
+++ b/arch/arm/mach-versal/cpu.c
@@ -12,12 +12,18 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define VERSAL_MEM_MAP_USED    6
+#define VERSAL_MEM_MAP_USED    5
 
 #define DRAM_BANKS CONFIG_NR_DRAM_BANKS
 
+#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
+#define TCM_MAP 1
+#else
+#define TCM_MAP 0
+#endif
+
 /* +1 is end of list which needs to be empty */
-#define VERSAL_MEM_MAP_MAX (VERSAL_MEM_MAP_USED + DRAM_BANKS + 1)
+#define VERSAL_MEM_MAP_MAX (VERSAL_MEM_MAP_USED + DRAM_BANKS + TCM_MAP + 1)
 
 static struct mm_region versal_mem_map[VERSAL_MEM_MAP_MAX] = {
        {
@@ -35,12 +41,6 @@ static struct mm_region versal_mem_map[VERSAL_MEM_MAP_MAX] = {
                         PTE_BLOCK_NON_SHARE |
                         PTE_BLOCK_PXN | PTE_BLOCK_UXN
        }, {
-               .virt = 0xffe00000UL,
-               .phys = 0xffe00000UL,
-               .size = 0x00200000UL,
-               .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-                        PTE_BLOCK_INNER_SHARE
-       }, {
                .virt = 0x400000000UL,
                .phys = 0x400000000UL,
                .size = 0x200000000UL,
@@ -67,6 +67,15 @@ void mem_map_fill(void)
 {
        int banks = VERSAL_MEM_MAP_USED;
 
+#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
+       versal_mem_map[banks].virt = 0xffe00000UL;
+       versal_mem_map[banks].phys = 0xffe00000UL;
+       versal_mem_map[banks].size = 0x00200000UL;
+       versal_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+                                     PTE_BLOCK_INNER_SHARE;
+       banks = banks + 1;
+#endif
+
        for (int i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
                /* Zero size means no more DDR that's this is end */
                if (!gd->bd->bi_dram[i].size)