[U-Boot] [PATCH v2] armv8: fsl-lsch3: Rewrite MMU translation table entries
Alison Wang
b18965 at freescale.com
Mon Aug 3 04:48:28 CEST 2015
This patch rewrites MMU translation table entries to achieve:
a) Start with all table entries as "invalid".
b) Rewrite the table entries as "device-ngnrne" for cache-inhibit
access.
c) Rewrite the table entries as "normal" for cache-enabled access.
Signed-off-by: Alison Wang <alison.wang at freescale.com>
Signed-off-by: York Sun <yorksun at freescale.com>
---
Changes in v2:
- Rebase the patch.
- Fix build error for emu and emu_D4 defconfig.
arch/arm/cpu/armv8/cache_v8.c | 17 +-
arch/arm/cpu/armv8/fsl-lsch3/README | 71 ++++
arch/arm/cpu/armv8/fsl-lsch3/cpu.c | 462 +++++++++++++++++----------
arch/arm/include/asm/arch-fsl-lsch3/config.h | 1 +
arch/arm/include/asm/armv8/mmu.h | 8 +-
5 files changed, 380 insertions(+), 179 deletions(-)
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index c22f7b6..9a96024 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -12,13 +12,22 @@
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_SYS_DCACHE_OFF
-void set_pgtable_section(u64 *page_table, u64 index, u64 section,
- u64 memory_type)
+inline void set_pgtable_section(u64 *page_table, u64 index, u64 section,
+ u64 memory_type, u64 share)
{
u64 value;
value = section | PMD_TYPE_SECT | PMD_SECT_AF;
value |= PMD_ATTRINDX(memory_type);
+ value |= share;
+ page_table[index] = value;
+}
+
+inline void set_pgtable_table(u64 *page_table, u64 index, u64 *table_addr)
+{
+ u64 value;
+
+ value = (u64)table_addr | PMD_TYPE_TABLE;
page_table[index] = value;
}
@@ -32,7 +41,7 @@ static void mmu_setup(void)
/* Setup an identity-mapping for all spaces */
for (i = 0; i < (PGTABLE_SIZE >> 3); i++) {
set_pgtable_section(page_table, i, i << SECTION_SHIFT,
- MT_DEVICE_NGNRNE);
+ MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE);
}
/* Setup an identity-mapping for all RAM space */
@@ -42,7 +51,7 @@ static void mmu_setup(void)
for (j = start >> SECTION_SHIFT;
j < end >> SECTION_SHIFT; j++) {
set_pgtable_section(page_table, j, j << SECTION_SHIFT,
- MT_NORMAL);
+ MT_NORMAL, PMD_SECT_NON_SHARE);
}
}
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/README b/arch/arm/cpu/armv8/fsl-lsch3/README
index 3c15479..08da7e4 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/README
+++ b/arch/arm/cpu/armv8/fsl-lsch3/README
@@ -171,3 +171,74 @@ nand write <u-boot image in memory> 80000 <size of u-boot image>
Notice the difference from QDS is SRC, SRC_ADDR and the offset of u-boot image
to match board NAND device with 4KB/page, block size 512KB.
+
+MMU Translation Tables
+======================
+
+(1) Early MMU Tables:
+
+ Level 0 Level 1 Level 2
+------------------ ------------------ ------------------
+| 0x00_0000_0000 | -----> | 0x00_0000_0000 | -----> | 0x00_0000_0000 |
+------------------ ------------------ ------------------
+| 0x80_0000_0000 | --| | 0x00_4000_0000 | | 0x00_0020_0000 |
+------------------ | ------------------ ------------------
+| invalid | | | 0x00_8000_0000 | | 0x00_0040_0000 |
+------------------ | ------------------ ------------------
+ | | 0x00_c000_0000 | | 0x00_0060_0000 |
+ | ------------------ ------------------
+ | | 0x01_0000_0000 | | 0x00_0080_0000 |
+ | ------------------ ------------------
+ | ... ...
+ | ------------------
+ | | 0x05_8000_0000 | --|
+ | ------------------ |
+ | | 0x05_c000_0000 | |
+ | ------------------ |
+ | ... |
+ | ------------------ | ------------------
+ |--> | 0x80_0000_0000 | |-> | 0x00_3000_0000 |
+ ------------------ ------------------
+ | 0x80_4000_0000 | | 0x00_3020_0000 |
+ ------------------ ------------------
+ | 0x80_8000_0000 | | 0x00_3040_0000 |
+ ------------------ ------------------
+ | 0x80_c000_0000 | | 0x00_3060_0000 |
+ ------------------ ------------------
+ | 0x81_0000_0000 | | 0x00_3080_0000 |
+ ------------------ ------------------
+ ... ...
+
+(2) Final MMU Tables:
+
+ Level 0 Level 1 Level 2
+------------------ ------------------ ------------------
+| 0x00_0000_0000 | -----> | 0x00_0000_0000 | -----> | 0x00_0000_0000 |
+------------------ ------------------ ------------------
+| 0x80_0000_0000 | --| | 0x00_4000_0000 | | 0x00_0020_0000 |
+------------------ | ------------------ ------------------
+| invalid | | | 0x00_8000_0000 | | 0x00_0040_0000 |
+------------------ | ------------------ ------------------
+ | | 0x00_c000_0000 | | 0x00_0060_0000 |
+ | ------------------ ------------------
+ | | 0x01_0000_0000 | | 0x00_0080_0000 |
+ | ------------------ ------------------
+ | ... ...
+ | ------------------
+ | | 0x08_0000_0000 | --|
+ | ------------------ |
+ | | 0x08_4000_0000 | |
+ | ------------------ |
+ | ... |
+ | ------------------ | ------------------
+ |--> | 0x80_0000_0000 | |--> | 0x08_0000_0000 |
+ ------------------ ------------------
+ | 0x80_4000_0000 | | 0x08_0020_0000 |
+ ------------------ ------------------
+ | 0x80_8000_0000 | | 0x08_0040_0000 |
+ ------------------ ------------------
+ | 0x80_c000_0000 | | 0x08_0060_0000 |
+ ------------------ ------------------
+ | 0x81_0000_0000 | | 0x08_0080_0000 |
+ ------------------ ------------------
+ ... ...
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
index d02c0be..c72fed5 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
@@ -6,6 +6,7 @@
#include <common.h>
#include <asm/io.h>
+#include <asm/errno.h>
#include <asm/system.h>
#include <asm/armv8/mmu.h>
#include <asm/io.h>
@@ -53,27 +54,16 @@ void cpu_name(char *name)
}
#ifndef CONFIG_SYS_DCACHE_OFF
-/*
- * To start MMU before DDR is available, we create MMU table in SRAM.
- * The base address of SRAM is CONFIG_SYS_FSL_OCRAM_BASE. We use three
- * levels of translation tables here to cover 40-bit address space.
- * We use 4KB granule size, with 40 bits physical address, T0SZ=24
- * Level 0 IA[39], table address @0
- * Level 1 IA[31:30], table address @0x1000, 0x2000
- * Level 2 IA[29:21], table address @0x3000, 0x4000
- * Address above 0x5000 is free for other purpose.
- */
-#define SECTION_SHIFT_L0 39UL
-#define SECTION_SHIFT_L1 30UL
-#define SECTION_SHIFT_L2 21UL
-#define BLOCK_SIZE_L0 0x8000000000UL
-#define BLOCK_SIZE_L1 (1 << SECTION_SHIFT_L1)
-#define BLOCK_SIZE_L2 (1 << SECTION_SHIFT_L2)
-#define CONFIG_SYS_IFC_BASE 0x30000000
-#define CONFIG_SYS_IFC_SIZE 0x10000000
-#define CONFIG_SYS_IFC_BASE2 0x500000000
-#define CONFIG_SYS_IFC_SIZE2 0x100000000
+#define SECTION_SHIFT_L0 39UL
+#define SECTION_SHIFT_L1 30UL
+#define SECTION_SHIFT_L2 21UL
+#define BLOCK_SIZE_L0 0x8000000000
+#define BLOCK_SIZE_L1 0x40000000
+#define BLOCK_SIZE_L2 0x200000
+
+#define NUM_OF_ENTRY 512
+
#define TCR_EL2_PS_40BIT (2 << 16)
#define LSCH3_VA_BITS (40)
#define LSCH3_TCR (TCR_TG0_4K | \
@@ -89,95 +79,253 @@ void cpu_name(char *name)
TCR_IRGN_WBWA | \
TCR_T0SZ(LSCH3_VA_BITS))
+#define CONFIG_SYS_FSL_CCSR_BASE 0x00000000
+#define CONFIG_SYS_FSL_CCSR_SIZE 0x10000000
+#define CONFIG_SYS_FSL_QSPI_BASE1 0x20000000
+#define CONFIG_SYS_FSL_QSPI_SIZE1 0x10000000
+#define CONFIG_SYS_FSL_IFC_BASE1 0x30000000
+#define CONFIG_SYS_FSL_IFC_SIZE1 0x10000000
+#define CONFIG_SYS_FSL_DRAM_BASE1 0x80000000
+#define CONFIG_SYS_FSL_DRAM_SIZE1 0x80000000
+#define CONFIG_SYS_FSL_QSPI_BASE2 0x440000000
+#define CONFIG_SYS_FSL_QSPI_SIZE2 0xc0000000
+#define CONFIG_SYS_FSL_IFC_BASE2 0x500000000
+#define CONFIG_SYS_FSL_IFC_SIZE2 0x100000000
+#define CONFIG_SYS_FSL_DCSR_BASE 0x700000000
+#define CONFIG_SYS_FSL_DCSR_SIZE 0x40000000
+#define CONFIG_SYS_FSL_MC_BASE 0x80c000000
+#define CONFIG_SYS_FSL_MC_SIZE 0x4000000
+#define CONFIG_SYS_FSL_NI_BASE 0x810000000
+#define CONFIG_SYS_FSL_NI_SIZE 0x8000000
+#define CONFIG_SYS_FSL_QBMAN_BASE 0x818000000
+#define CONFIG_SYS_FSL_QBMAN_SIZE 0x8000000
+#define CONFIG_SYS_PCIE1_PHYS_SIZE 0x200000000
+#define CONFIG_SYS_PCIE2_PHYS_SIZE 0x200000000
+#define CONFIG_SYS_PCIE3_PHYS_SIZE 0x200000000
+#define CONFIG_SYS_PCIE4_PHYS_SIZE 0x200000000
+#define CONFIG_SYS_FSL_WRIOP1_BASE 0x4300000000
+#define CONFIG_SYS_FSL_WRIOP1_SIZE 0x100000000
+#define CONFIG_SYS_FSL_AIOP1_BASE 0x4b00000000
+#define CONFIG_SYS_FSL_AIOP1_SIZE 0x100000000
+#define CONFIG_SYS_FSL_PEBUF_BASE 0x4c00000000
+#define CONFIG_SYS_FSL_PEBUF_SIZE 0x400000000
+#define CONFIG_SYS_FSL_DRAM_BASE2 0x8080000000
+#define CONFIG_SYS_FSL_DRAM_SIZE2 0x7F80000000
+
+struct sys_mmu_table {
+ u64 virt_addr;
+ u64 phys_addr;
+ u64 size;
+ u64 memory_type;
+ u64 share;
+};
+
+static const struct sys_mmu_table lsch3_early_mmu_table[] = {
+ { CONFIG_SYS_FSL_CCSR_BASE, CONFIG_SYS_FSL_CCSR_BASE,
+ CONFIG_SYS_FSL_CCSR_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_OCRAM_BASE, CONFIG_SYS_FSL_OCRAM_BASE,
+ CONFIG_SYS_FSL_OCRAM_SIZE, MT_NORMAL, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_IFC_BASE1, CONFIG_SYS_FSL_IFC_BASE1,
+ CONFIG_SYS_FSL_IFC_SIZE1, MT_NORMAL, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FSL_IFC_BASE1,
+ CONFIG_SYS_FSL_IFC_SIZE1, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
+ CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ { CONFIG_SYS_FSL_DCSR_BASE, CONFIG_SYS_FSL_DCSR_BASE,
+ CONFIG_SYS_FSL_DCSR_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_DRAM_BASE2, CONFIG_SYS_FSL_DRAM_BASE2,
+ CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+};
+
+static const struct sys_mmu_table lsch3_final_mmu_table[] = {
+ { CONFIG_SYS_FSL_CCSR_BASE, CONFIG_SYS_FSL_CCSR_BASE,
+ CONFIG_SYS_FSL_CCSR_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_OCRAM_BASE, CONFIG_SYS_FSL_OCRAM_BASE,
+ CONFIG_SYS_FSL_OCRAM_SIZE, MT_NORMAL, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
+ CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ { CONFIG_SYS_FSL_QSPI_BASE2, CONFIG_SYS_FSL_QSPI_BASE2,
+ CONFIG_SYS_FSL_QSPI_SIZE2, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_IFC_BASE2, CONFIG_SYS_FSL_IFC_BASE2,
+ CONFIG_SYS_FSL_IFC_SIZE2, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_DCSR_BASE, CONFIG_SYS_FSL_DCSR_BASE,
+ CONFIG_SYS_FSL_DCSR_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_MC_BASE, CONFIG_SYS_FSL_MC_BASE,
+ CONFIG_SYS_FSL_MC_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_NI_BASE, CONFIG_SYS_FSL_NI_BASE,
+ CONFIG_SYS_FSL_NI_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_QBMAN_BASE, CONFIG_SYS_FSL_QBMAN_BASE,
+ CONFIG_SYS_FSL_QBMAN_SIZE, MT_NORMAL, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_PCIE1_PHYS_ADDR, CONFIG_SYS_PCIE1_PHYS_ADDR,
+ CONFIG_SYS_PCIE1_PHYS_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_PCIE2_PHYS_ADDR, CONFIG_SYS_PCIE2_PHYS_ADDR,
+ CONFIG_SYS_PCIE2_PHYS_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_PCIE3_PHYS_ADDR, CONFIG_SYS_PCIE3_PHYS_ADDR,
+ CONFIG_SYS_PCIE3_PHYS_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+#ifdef CONFIG_LS2085A
+ { CONFIG_SYS_PCIE4_PHYS_ADDR, CONFIG_SYS_PCIE4_PHYS_ADDR,
+ CONFIG_SYS_PCIE4_PHYS_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+#endif
+ { CONFIG_SYS_FSL_WRIOP1_BASE, CONFIG_SYS_FSL_WRIOP1_BASE,
+ CONFIG_SYS_FSL_WRIOP1_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_AIOP1_BASE, CONFIG_SYS_FSL_AIOP1_BASE,
+ CONFIG_SYS_FSL_AIOP1_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_PEBUF_BASE, CONFIG_SYS_FSL_PEBUF_BASE,
+ CONFIG_SYS_FSL_PEBUF_SIZE, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
+ { CONFIG_SYS_FSL_DRAM_BASE2, CONFIG_SYS_FSL_DRAM_BASE2,
+ CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+};
+
+struct table_info {
+ u64 *ptr;
+ u64 table_base;
+ u64 entry_size;
+};
+
/*
- * Final MMU
- * Let's start from the same layout as early MMU and modify as needed.
- * IFC regions will be cache-inhibit.
+ * Set the block entries according to the information of the table.
*/
-#define FINAL_QBMAN_CACHED_MEM 0x818000000UL
-#define FINAL_QBMAN_CACHED_SIZE 0x4000000
+static int set_block_entry(const struct sys_mmu_table *list,
+ struct table_info *table)
+{
+ u64 block_size = 0, block_shift = 0;
+ u64 block_addr, index;
+ int j;
+
+ if (table->entry_size == BLOCK_SIZE_L1) {
+ block_size = BLOCK_SIZE_L1;
+ block_shift = SECTION_SHIFT_L1;
+ } else if (table->entry_size == BLOCK_SIZE_L2) {
+ block_size = BLOCK_SIZE_L2;
+ block_shift = SECTION_SHIFT_L2;
+ } else {
+ return -EINVAL;
+ }
+ block_addr = list->phys_addr;
+ index = (list->virt_addr - table->table_base) >> block_shift;
+
+ for (j = 0; j < (list->size >> block_shift); j++) {
+ set_pgtable_section(table->ptr,
+ index,
+ block_addr,
+ list->memory_type,
+ list->share);
+ block_addr += block_size;
+ index++;
+ }
-static inline void early_mmu_setup(void)
+ return 0;
+}
+
+/*
+ * Find the corresponding table entry for the list.
+ */
+static int find_table(const struct sys_mmu_table *list,
+ struct table_info *table, u64 *level0_table)
{
- int el;
- u64 i;
- u64 section_l1t0, section_l1t1, section_l2t0, section_l2t1;
- u64 *level0_table = (u64 *)CONFIG_SYS_FSL_OCRAM_BASE;
- u64 *level1_table_0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x1000);
- u64 *level1_table_1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x2000);
- u64 *level2_table_0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x3000);
- u64 *level2_table_1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x4000);
+ u64 index = 0, level = 0;
+ u64 *level_table = level0_table;
+ u64 temp_base = 0, block_size = 0, block_shift = 0;
+
+ while (level < 3) {
+ if (level == 0) {
+ block_size = BLOCK_SIZE_L0;
+ block_shift = SECTION_SHIFT_L0;
+ } else if (level == 1) {
+ block_size = BLOCK_SIZE_L1;
+ block_shift = SECTION_SHIFT_L1;
+ } else if (level == 2) {
+ block_size = BLOCK_SIZE_L2;
+ block_shift = SECTION_SHIFT_L2;
+ }
- level0_table[0] =
- (u64)level1_table_0 | PMD_TYPE_TABLE;
- level0_table[1] =
- (u64)level1_table_1 | PMD_TYPE_TABLE;
+ index = 0;
+ while (list->virt_addr >= temp_base) {
+ index++;
+ temp_base += block_size;
+ }
- /*
- * set level 1 table 0 to cache_inhibit, covering 0 to 512GB
- * set level 1 table 1 to cache enabled, covering 512GB to 1TB
- * set level 2 table to cache-inhibit, covering 0 to 1GB
- */
- section_l1t0 = 0;
- section_l1t1 = BLOCK_SIZE_L0;
- section_l2t0 = 0;
- section_l2t1 = CONFIG_SYS_FLASH_BASE;
- for (i = 0; i < 512; i++) {
- set_pgtable_section(level1_table_0, i, section_l1t0,
- MT_DEVICE_NGNRNE);
- set_pgtable_section(level1_table_1, i, section_l1t1,
- MT_NORMAL);
- set_pgtable_section(level2_table_0, i, section_l2t0,
- MT_DEVICE_NGNRNE);
- set_pgtable_section(level2_table_1, i, section_l2t1,
- MT_DEVICE_NGNRNE);
- section_l1t0 += BLOCK_SIZE_L1;
- section_l1t1 += BLOCK_SIZE_L1;
- section_l2t0 += BLOCK_SIZE_L2;
- section_l2t1 += BLOCK_SIZE_L2;
+ temp_base -= block_size;
+
+ if ((level_table[index - 1] & PMD_TYPE_MASK) ==
+ PMD_TYPE_TABLE) {
+ level_table = (u64 *)(level_table[index - 1] &
+ ~PMD_TYPE_MASK);
+ level++;
+ continue;
+ } else {
+ if (level == 0)
+ return -EINVAL;
+
+ if ((list->phys_addr + list->size) >
+ (temp_base + block_size * NUM_OF_ENTRY))
+ return -EINVAL;
+
+ /*
+ * Check the address and size of the list member is
+ * aligned with the block size.
+ */
+ if (((list->phys_addr & (block_size - 1)) != 0) ||
+ ((list->size & (block_size - 1)) != 0))
+ return -EINVAL;
+
+ table->ptr = level_table;
+ table->table_base = temp_base -
+ ((index - 1) << block_shift);
+ table->entry_size = block_size;
+
+ return 0;
+ }
}
+ return -EINVAL;
+}
- level1_table_0[0] =
- (u64)level2_table_0 | PMD_TYPE_TABLE;
- level1_table_0[1] =
- 0x40000000 | PMD_SECT_AF | PMD_TYPE_SECT |
- PMD_ATTRINDX(MT_DEVICE_NGNRNE);
- level1_table_0[2] =
- 0x80000000 | PMD_SECT_AF | PMD_TYPE_SECT |
- PMD_ATTRINDX(MT_NORMAL);
- level1_table_0[3] =
- 0xc0000000 | PMD_SECT_AF | PMD_TYPE_SECT |
- PMD_ATTRINDX(MT_NORMAL);
-
- /* Rewerite table to enable cache for OCRAM */
- set_pgtable_section(level2_table_0,
- CONFIG_SYS_FSL_OCRAM_BASE >> SECTION_SHIFT_L2,
- CONFIG_SYS_FSL_OCRAM_BASE,
- MT_NORMAL);
-
-#if defined(CONFIG_SYS_NOR0_CSPR_EARLY) && defined(CONFIG_SYS_NOR_AMASK_EARLY)
- /* Rewrite table to enable cache for two entries (4MB) */
- section_l2t1 = CONFIG_SYS_IFC_BASE;
- set_pgtable_section(level2_table_0,
- section_l2t1 >> SECTION_SHIFT_L2,
- section_l2t1,
- MT_NORMAL);
- section_l2t1 += BLOCK_SIZE_L2;
- set_pgtable_section(level2_table_0,
- section_l2t1 >> SECTION_SHIFT_L2,
- section_l2t1,
- MT_NORMAL);
-#endif
-
- /* Create a mapping for 256MB IFC region to final flash location */
- level1_table_0[CONFIG_SYS_FLASH_BASE >> SECTION_SHIFT_L1] =
- (u64)level2_table_1 | PMD_TYPE_TABLE;
- section_l2t1 = CONFIG_SYS_IFC_BASE;
- for (i = 0; i < 0x10000000 >> SECTION_SHIFT_L2; i++) {
- set_pgtable_section(level2_table_1, i,
- section_l2t1, MT_DEVICE_NGNRNE);
- section_l2t1 += BLOCK_SIZE_L2;
+/*
+ * To start MMU before DDR is available, we create MMU table in SRAM.
+ * The base address of SRAM is CONFIG_SYS_FSL_OCRAM_BASE. We use three
+ * levels of translation tables here to cover 40-bit address space.
+ * We use 4KB granule size, with 40 bits physical address, T0SZ=24
+ * Level 0 IA[39], table address @0
+ * Level 1 IA[38:30], table address @0x1000, 0x2000
+ * Level 2 IA[29:21], table address @0x3000, 0x4000
+ * Address above 0x5000 is free for other purpose.
+ */
+static inline void early_mmu_setup(void)
+{
+ unsigned int el, i;
+ u64 *level0_table = (u64 *)CONFIG_SYS_FSL_OCRAM_BASE;
+ u64 *level1_table0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x1000);
+ u64 *level1_table1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x2000);
+ u64 *level2_table0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x3000);
+ u64 *level2_table1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x4000);
+ struct table_info table = {level0_table, 0, BLOCK_SIZE_L0};
+
+ /* Invalidate all table entries */
+ memset(level0_table, 0, 0x5000);
+
+ /* Fill in the table entries */
+ set_pgtable_table(level0_table, 0, level1_table0);
+ set_pgtable_table(level0_table, 1, level1_table1);
+ set_pgtable_table(level1_table0, 0, level2_table0);
+ set_pgtable_table(level1_table0,
+ CONFIG_SYS_FLASH_BASE >> SECTION_SHIFT_L1,
+ level2_table1);
+
+ /* Find the table and fill in the block entries */
+ for (i = 0; i < ARRAY_SIZE(lsch3_early_mmu_table); i++) {
+ if (find_table(&lsch3_early_mmu_table[i],
+ &table, level0_table) == 0) {
+ /*
+ * If find_table() returns error, it cannot be dealt
+ * with here. Breakpoint can be added for debugging.
+ */
+ set_block_entry(&lsch3_early_mmu_table[i], &table);
+ /*
+ * If set_block_entry() returns error, it cannot be
+ * dealt with here too.
+ */
+ }
}
el = current_el();
@@ -186,89 +334,55 @@ static inline void early_mmu_setup(void)
}
/*
- * This final tale looks similar to early table, but different in detail.
- * These tables are in regular memory. Cache on IFC is disabled. One sub table
- * is added to enable cache for QBMan.
+ * The final tables look similar to early tables, but different in detail.
+ * These tables are in DRAM. Sub tables are added to enable cache for
+ * QBMan and OCRAM.
+ *
+ * Level 1 table 0 contains 512 entries for each 1GB from 0 to 512GB.
+ * Level 1 table 1 contains 512 entries for each 1GB from 512GB to 1TB.
+ * Level 2 table 0 contains 512 entries for each 2MB from 0 to 1GB.
+ * Level 2 table 1 contains 512 entries for each 2MB from 32GB to 33GB.
*/
static inline void final_mmu_setup(void)
{
- int el;
- u64 i, tbl_base, tbl_limit, section_base;
- u64 section_l1t0, section_l1t1, section_l2;
+ unsigned int el, i;
u64 *level0_table = (u64 *)gd->arch.tlb_addr;
- u64 *level1_table_0 = (u64 *)(gd->arch.tlb_addr + 0x1000);
- u64 *level1_table_1 = (u64 *)(gd->arch.tlb_addr + 0x2000);
- u64 *level2_table_0 = (u64 *)(gd->arch.tlb_addr + 0x3000);
- u64 *level2_table_1 = (u64 *)(gd->arch.tlb_addr + 0x4000);
-
-
- level0_table[0] =
- (u64)level1_table_0 | PMD_TYPE_TABLE;
- level0_table[1] =
- (u64)level1_table_1 | PMD_TYPE_TABLE;
-
- /*
- * set level 1 table 0 to cache_inhibit, covering 0 to 512GB
- * set level 1 table 1 to cache enabled, covering 512GB to 1TB
- * set level 2 table 0 to cache-inhibit, covering 0 to 1GB
- */
- section_l1t0 = 0;
- section_l1t1 = BLOCK_SIZE_L0 | PMD_SECT_OUTER_SHARE;
- section_l2 = 0;
- for (i = 0; i < 512; i++) {
- set_pgtable_section(level1_table_0, i, section_l1t0,
- MT_DEVICE_NGNRNE);
- set_pgtable_section(level1_table_1, i, section_l1t1,
- MT_NORMAL);
- set_pgtable_section(level2_table_0, i, section_l2,
- MT_DEVICE_NGNRNE);
- section_l1t0 += BLOCK_SIZE_L1;
- section_l1t1 += BLOCK_SIZE_L1;
- section_l2 += BLOCK_SIZE_L2;
- }
-
- level1_table_0[0] =
- (u64)level2_table_0 | PMD_TYPE_TABLE;
- level1_table_0[2] =
- 0x80000000 | PMD_SECT_AF | PMD_TYPE_SECT |
- PMD_SECT_OUTER_SHARE | PMD_ATTRINDX(MT_NORMAL);
- level1_table_0[3] =
- 0xc0000000 | PMD_SECT_AF | PMD_TYPE_SECT |
- PMD_SECT_OUTER_SHARE | PMD_ATTRINDX(MT_NORMAL);
-
- /* Rewrite table to enable cache */
- set_pgtable_section(level2_table_0,
- CONFIG_SYS_FSL_OCRAM_BASE >> SECTION_SHIFT_L2,
- CONFIG_SYS_FSL_OCRAM_BASE,
- MT_NORMAL);
+ u64 *level1_table0 = (u64 *)(gd->arch.tlb_addr + 0x1000);
+ u64 *level1_table1 = (u64 *)(gd->arch.tlb_addr + 0x2000);
+ u64 *level2_table0 = (u64 *)(gd->arch.tlb_addr + 0x3000);
+ u64 *level2_table1 = (u64 *)(gd->arch.tlb_addr + 0x4000);
+ struct table_info table = {level0_table, 0, BLOCK_SIZE_L0};
+
+ /* Invalidate all table entries */
+ memset(level0_table, 0, PGTABLE_SIZE);
+
+ /* Fill in the table entries */
+ set_pgtable_table(level0_table, 0, level1_table0);
+ set_pgtable_table(level0_table, 1, level1_table1);
+ set_pgtable_table(level1_table0, 0, level2_table0);
+ set_pgtable_table(level1_table0,
+ CONFIG_SYS_FSL_QBMAN_BASE >> SECTION_SHIFT_L1,
+ level2_table1);
+
+ /* Find the table and fill in the block entries */
+ for (i = 0; i < ARRAY_SIZE(lsch3_final_mmu_table); i++) {
+ if (find_table(&lsch3_final_mmu_table[i],
+ &table, level0_table) == 0) {
+ if (set_block_entry(&lsch3_final_mmu_table[i],
+ &table) != 0) {
+ printf("MMU error: could not set block entry for %p\n",
+ &lsch3_final_mmu_table[i]);
+ }
- /*
- * Fill in other part of tables if cache is needed
- * If finer granularity than 1GB is needed, sub table
- * should be created.
- */
- section_base = FINAL_QBMAN_CACHED_MEM & ~(BLOCK_SIZE_L1 - 1);
- i = section_base >> SECTION_SHIFT_L1;
- level1_table_0[i] = (u64)level2_table_1 | PMD_TYPE_TABLE;
- section_l2 = section_base;
- for (i = 0; i < 512; i++) {
- set_pgtable_section(level2_table_1, i, section_l2,
- MT_DEVICE_NGNRNE);
- section_l2 += BLOCK_SIZE_L2;
- }
- tbl_base = FINAL_QBMAN_CACHED_MEM & (BLOCK_SIZE_L1 - 1);
- tbl_limit = (FINAL_QBMAN_CACHED_MEM + FINAL_QBMAN_CACHED_SIZE) &
- (BLOCK_SIZE_L1 - 1);
- for (i = tbl_base >> SECTION_SHIFT_L2;
- i < tbl_limit >> SECTION_SHIFT_L2; i++) {
- section_l2 = section_base + (i << SECTION_SHIFT_L2);
- set_pgtable_section(level2_table_1, i,
- section_l2, MT_NORMAL);
+ } else {
+ printf("MMU error: could not find the table for %p\n",
+ &lsch3_final_mmu_table[i]);
+ }
}
/* flush new MMU table */
flush_dcache_range(gd->arch.tlb_addr,
- gd->arch.tlb_addr + gd->arch.tlb_size);
+ gd->arch.tlb_addr + gd->arch.tlb_size);
/* point TTBR to the new table */
el = current_el();
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h
index 8675e91..928bbc9 100644
--- a/arch/arm/include/asm/arch-fsl-lsch3/config.h
+++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h
@@ -18,6 +18,7 @@
#define CONFIG_MP
#define CONFIG_SYS_FSL_OCRAM_BASE 0x18000000 /* initial RAM */
+#define CONFIG_SYS_FSL_OCRAM_SIZE 0x00200000 /* 2M */
/* Link Definitions */
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_FSL_OCRAM_BASE + 0xfff0)
diff --git a/arch/arm/include/asm/armv8/mmu.h b/arch/arm/include/asm/armv8/mmu.h
index 04fa0be..0c928d4 100644
--- a/arch/arm/include/asm/armv8/mmu.h
+++ b/arch/arm/include/asm/armv8/mmu.h
@@ -65,6 +65,7 @@
/*
* Section
*/
+#define PMD_SECT_NON_SHARE (0 << 8)
#define PMD_SECT_OUTER_SHARE (2 << 8)
#define PMD_SECT_INNER_SHARE (3 << 8)
#define PMD_SECT_AF (1 << 10)
@@ -110,8 +111,13 @@
TCR_T0SZ(VA_BITS))
#ifndef __ASSEMBLY__
+
void set_pgtable_section(u64 *page_table, u64 index,
- u64 section, u64 memory_type);
+ u64 section, u64 memory_type,
+ u64 share);
+void set_pgtable_table(u64 *page_table, u64 index,
+ u64 *table_addr);
+
static inline void set_ttbr_tcr_mair(int el, u64 table, u64 tcr, u64 attr)
{
asm volatile("dsb sy");
--
2.1.0.27.g96db324
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