diff options
Diffstat (limited to 'arch/arm/mach-tegra/arm64-mmu.c')
| -rw-r--r-- | arch/arm/mach-tegra/arm64-mmu.c | 132 |
1 files changed, 17 insertions, 115 deletions
diff --git a/arch/arm/mach-tegra/arm64-mmu.c b/arch/arm/mach-tegra/arm64-mmu.c index c2276523cb..501c4f00c4 100644 --- a/arch/arm/mach-tegra/arm64-mmu.c +++ b/arch/arm/mach-tegra/arm64-mmu.c @@ -12,120 +12,22 @@ #include <asm/system.h> #include <asm/armv8/mmu.h> -DECLARE_GLOBAL_DATA_PTR; - -#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 TCR_TG1_4K (1 << 31) -#define TCR_EPD1_DISABLE (1 << 23) -#define TEGRA_VA_BITS 40 -#define TEGRA_TCR TCR_TG1_4K | \ - TCR_EPD1_DISABLE | \ - TCR_SHARED_OUTER | \ - TCR_SHARED_INNER | \ - TCR_IRGN_WBWA | \ - TCR_ORGN_WBWA | \ - TCR_T0SZ(TEGRA_VA_BITS) - -#define MEMORY_ATTR PMD_SECT_AF | PMD_SECT_INNER_SHARE | \ - PMD_ATTRINDX(MT_NORMAL) | \ - PMD_TYPE_SECT -#define DEVICE_ATTR PMD_SECT_AF | PMD_SECT_PXN | \ - PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_NGNRNE) | \ - PMD_TYPE_SECT - -/* 4K size is required to place 512 entries in each level */ -#define TLB_TABLE_SIZE 0x1000 - -/* - * This mmu table looks as below - * Level 0 table contains two entries to 512GB sizes. One is Level1 Table 0 - * and other Level1 Table1. - * Level1 Table0 contains entries for each 1GB from 0 to 511GB. - * Level1 Table1 contains entries for each 1GB from 512GB to 1TB. - * Level2 Table0, Level2 Table1, Level2 Table2 and Level2 Table3 contains - * entries for each 2MB starting from 0GB, 1GB, 2GB and 3GB respectively. - */ -void mmu_setup(void) -{ - int el; - u64 i, section_l1t0, section_l1t1; - u64 section_l2t0, section_l2t1, section_l2t2, section_l2t3; - u64 *level0_table = (u64 *)gd->arch.tlb_addr; - u64 *level1_table_0 = (u64 *)(gd->arch.tlb_addr + TLB_TABLE_SIZE); - u64 *level1_table_1 = (u64 *)(gd->arch.tlb_addr + (2 * TLB_TABLE_SIZE)); - u64 *level2_table_0 = (u64 *)(gd->arch.tlb_addr + (3 * TLB_TABLE_SIZE)); - u64 *level2_table_1 = (u64 *)(gd->arch.tlb_addr + (4 * TLB_TABLE_SIZE)); - u64 *level2_table_2 = (u64 *)(gd->arch.tlb_addr + (5 * TLB_TABLE_SIZE)); - u64 *level2_table_3 = (u64 *)(gd->arch.tlb_addr + (6 * TLB_TABLE_SIZE)); - - /* Invalidate all table entries */ - memset(level0_table, 0, PGTABLE_SIZE); - - 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, covering 0 to 512GB - * set level 1 table 1, covering 512GB to 1TB - */ - section_l1t0 = 0; - section_l1t1 = BLOCK_SIZE_L0; - - for (i = 0; i < 512; i++) { - level1_table_0[i] = section_l1t0; - if (i >= 4) - level1_table_0[i] |= MEMORY_ATTR; - level1_table_1[i] = section_l1t1; - level1_table_1[i] |= MEMORY_ATTR; - section_l1t0 += BLOCK_SIZE_L1; - section_l1t1 += BLOCK_SIZE_L1; +static struct mm_region tegra_mem_map[] = { + { + .base = 0x0UL, + .size = 0x80000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + .base = 0x80000000UL, + .size = 0xff80000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE + }, { + /* List terminator */ + 0, } +}; - level1_table_0[0] = - (u64)level2_table_0 | PMD_TYPE_TABLE; - level1_table_0[1] = - (u64)level2_table_1 | PMD_TYPE_TABLE; - level1_table_0[2] = - (u64)level2_table_2 | PMD_TYPE_TABLE; - level1_table_0[3] = - (u64)level2_table_3 | PMD_TYPE_TABLE; - - section_l2t0 = 0; - section_l2t1 = section_l2t0 + BLOCK_SIZE_L1; /* 1GB */ - section_l2t2 = section_l2t1 + BLOCK_SIZE_L1; /* 2GB */ - section_l2t3 = section_l2t2 + BLOCK_SIZE_L1; /* 3GB */ - - for (i = 0; i < 512; i++) { - level2_table_0[i] = section_l2t0 | DEVICE_ATTR; - level2_table_1[i] = section_l2t1 | DEVICE_ATTR; - level2_table_2[i] = section_l2t2 | MEMORY_ATTR; - level2_table_3[i] = section_l2t3 | MEMORY_ATTR; - section_l2t0 += BLOCK_SIZE_L2; - section_l2t1 += BLOCK_SIZE_L2; - section_l2t2 += BLOCK_SIZE_L2; - section_l2t3 += BLOCK_SIZE_L2; - } - - /* flush new MMU table */ - flush_dcache_range(gd->arch.tlb_addr, - gd->arch.tlb_addr + gd->arch.tlb_size); - - /* point TTBR to the new table */ - el = current_el(); - set_ttbr_tcr_mair(el, gd->arch.tlb_addr, - TEGRA_TCR, MEMORY_ATTRIBUTES); - - set_sctlr(get_sctlr() | CR_M); -} - -u64 *arch_get_page_table(void) -{ - return (u64 *)(gd->arch.tlb_addr + (3 * TLB_TABLE_SIZE)); -} +struct mm_region *mem_map = tegra_mem_map; |
