diff options
Diffstat (limited to 'arch/arm/cpu/armv8/fsl-layerscape/cpu.c')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 142 |
1 files changed, 128 insertions, 14 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index 8847fc0287..6ea28ed5cb 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -206,11 +206,65 @@ static inline void early_mmu_setup(void) set_sctlr(get_sctlr() | CR_M); } +#ifdef CONFIG_SYS_MEM_RESERVE_SECURE +/* + * Called from final mmu setup. The phys_addr is new, non-existing + * address. A new sub table is created @level2_table_secure to cover + * size of CONFIG_SYS_MEM_RESERVE_SECURE memory. + */ +static inline int final_secure_ddr(u64 *level0_table, + u64 *level2_table_secure, + phys_addr_t phys_addr) +{ + int ret = -EINVAL; + struct table_info table = {}; + struct sys_mmu_table ddr_entry = { + 0, 0, BLOCK_SIZE_L1, MT_NORMAL, + PMD_SECT_OUTER_SHARE | PMD_SECT_NS + }; + u64 index; + + /* Need to create a new table */ + ddr_entry.virt_addr = phys_addr & ~(BLOCK_SIZE_L1 - 1); + ddr_entry.phys_addr = phys_addr & ~(BLOCK_SIZE_L1 - 1); + ret = find_table(&ddr_entry, &table, level0_table); + if (ret) + return ret; + index = (ddr_entry.virt_addr - table.table_base) >> SECTION_SHIFT_L1; + set_pgtable_table(table.ptr, index, level2_table_secure); + table.ptr = level2_table_secure; + table.table_base = ddr_entry.virt_addr; + table.entry_size = BLOCK_SIZE_L2; + ret = set_block_entry(&ddr_entry, &table); + if (ret) { + printf("MMU error: could not fill non-secure ddr block entries\n"); + return ret; + } + ddr_entry.virt_addr = phys_addr; + ddr_entry.phys_addr = phys_addr; + ddr_entry.size = CONFIG_SYS_MEM_RESERVE_SECURE; + ddr_entry.attribute = PMD_SECT_OUTER_SHARE; + ret = find_table(&ddr_entry, &table, level0_table); + if (ret) { + printf("MMU error: could not find secure ddr table\n"); + return ret; + } + ret = set_block_entry(&ddr_entry, &table); + if (ret) + printf("MMU error: could not set secure ddr block entry\n"); + + return ret; +} +#endif + /* * 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. * + * Put the MMU table in secure memory if gd->secure_ram is valid. + * OCRAM will be not used for this purpose so gd->secure_ram can't be 0. + * * 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. @@ -223,18 +277,40 @@ static inline void early_mmu_setup(void) */ static inline void final_mmu_setup(void) { - unsigned int el, i; + unsigned int el = current_el(); + unsigned int i; u64 *level0_table = (u64 *)gd->arch.tlb_addr; - 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); -#ifdef CONFIG_FSL_LSCH3 - u64 *level2_table1 = (u64 *)(gd->arch.tlb_addr + 0x4000); -#elif defined(CONFIG_FSL_LSCH2) - u64 *level2_table1 = (u64 *)(gd->arch.tlb_addr + 0x4000); - u64 *level2_table2 = (u64 *)(gd->arch.tlb_addr + 0x5000); + u64 *level1_table0; + u64 *level1_table1; + u64 *level2_table0; + u64 *level2_table1; +#ifdef CONFIG_FSL_LSCH2 + u64 *level2_table2; #endif - struct table_info table = {level0_table, 0, BLOCK_SIZE_L0}; + struct table_info table = {NULL, 0, BLOCK_SIZE_L0}; + +#ifdef CONFIG_SYS_MEM_RESERVE_SECURE + u64 *level2_table_secure; + + if (el == 3) { + /* + * Only use gd->secure_ram if the address is recalculated + * Align to 4KB for MMU table + */ + if (gd->secure_ram & MEM_RESERVE_SECURE_MAINTAINED) + level0_table = (u64 *)(gd->secure_ram & ~0xfff); + else + printf("MMU warning: gd->secure_ram is not maintained, disabled.\n"); + } +#endif + level1_table0 = level0_table + 512; + level1_table1 = level1_table0 + 512; + level2_table0 = level1_table1 + 512; + level2_table1 = level2_table0 + 512; +#ifdef CONFIG_FSL_LSCH2 + level2_table2 = level2_table1 + 512; +#endif + table.ptr = level0_table; /* Invalidate all table entries */ memset(level0_table, 0, PGTABLE_SIZE); @@ -269,17 +345,34 @@ static inline void final_mmu_setup(void) &final_mmu_table[i]); } } + /* Set the secure memory to secure in MMU */ +#ifdef CONFIG_SYS_MEM_RESERVE_SECURE + if (el == 3 && gd->secure_ram & MEM_RESERVE_SECURE_MAINTAINED) { +#ifdef CONFIG_FSL_LSCH3 + level2_table_secure = level2_table1 + 512; +#elif defined(CONFIG_FSL_LSCH2) + level2_table_secure = level2_table2 + 512; +#endif + if (!final_secure_ddr(level0_table, + level2_table_secure, + gd->secure_ram & ~0x3)) { + gd->secure_ram |= MEM_RESERVE_SECURE_SECURED; + debug("Now MMU table is in secured memory at 0x%llx\n", + gd->secure_ram & ~0x3); + } else { + printf("MMU warning: Failed to secure DDR\n"); + } + } +#endif /* flush new MMU table */ - flush_dcache_range(gd->arch.tlb_addr, - gd->arch.tlb_addr + gd->arch.tlb_size); + flush_dcache_range((ulong)level0_table, + (ulong)level0_table + gd->arch.tlb_size); #ifdef CONFIG_SYS_DPAA_FMAN flush_dcache_all(); #endif /* point TTBR to the new table */ - el = current_el(); - set_ttbr_tcr_mair(el, (u64)level0_table, LAYERSCAPE_TCR_FINAL, MEMORY_ATTRIBUTES); /* @@ -543,3 +636,24 @@ void reset_cpu(ulong addr) val |= 0x02; scfg_out32(rstcr, val); } + +phys_size_t board_reserve_ram_top(phys_size_t ram_size) +{ + phys_size_t ram_top = ram_size; + +#ifdef CONFIG_SYS_MEM_TOP_HIDE +#error CONFIG_SYS_MEM_TOP_HIDE not to be used together with this function +#endif +/* Carve the Debug Server private DRAM block from the end of DRAM */ +#ifdef CONFIG_FSL_DEBUG_SERVER + ram_top -= debug_server_get_dram_block_size(); +#endif + +/* Carve the MC private DRAM block from the end of DRAM */ +#ifdef CONFIG_FSL_MC_ENET + ram_top -= mc_get_dram_block_size(); + ram_top &= ~(CONFIG_SYS_MC_RSV_MEM_ALIGN - 1); +#endif + + return ram_top; +} |
