[U-Boot,2/2] arm64: zynqmp: Provide a Kconfig option to disable OCM and TCM MMU mapping
diff mbox series

Message ID 15369aff6cbb9adee2233a4ae38bcfe12eead835.1568187776.git.michal.simek@xilinx.com
State New
Delegated to: Michal Simek
Headers show
Series
  • [U-Boot,1/2] arm64: versal: Enable memory mapping via DT
Related show

Commit Message

Michal Simek Sept. 11, 2019, 7:42 a.m. UTC
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>
---

 arch/arm/mach-versal/Kconfig |  7 +++++++
 arch/arm/mach-versal/cpu.c   | 25 +++++++++++++++++--------
 2 files changed, 24 insertions(+), 8 deletions(-)

Patch
diff mbox series

diff --git a/arch/arm/mach-versal/Kconfig b/arch/arm/mach-versal/Kconfig
index 26d175637101..06a035292464 100644
--- 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 dc6a9205be0e..f0d047d3232f 100644
--- 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] = {
 	{
@@ -34,12 +40,6 @@  static struct mm_region versal_mem_map[VERSAL_MEM_MAP_MAX] = {
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 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,
@@ -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)