From a89fea7fd101212cbd0583ba7fa152009afb7a52 Mon Sep 17 00:00:00 2001 From: Mark Kettenis Date: Tue, 8 Feb 2022 22:00:09 +0100 Subject: [PATCH] arm: apple: Add M1 Pro/Max support Choose the memory map based on the compatible property from the device tree passed to us by m1n1. Since DRAM on the M1 Pro/Max starts at a different address avoid hardcoding the top of usable memory. Also make sure that the addresses entered into the memory map are page aligned such that we don't crash in dcache_enable(). Signed-off-by: Mark Kettenis Tested on: Macbook M1 Max Tested-by: Janne Grunau --- arch/arm/mach-apple/board.c | 207 +++++++++++++++++++++++++++++++++++--------- 1 file changed, 168 insertions(+), 39 deletions(-) diff --git a/arch/arm/mach-apple/board.c b/arch/arm/mach-apple/board.c index b7e8d21..f9f8a2f 100644 --- a/arch/arm/mach-apple/board.c +++ b/arch/arm/mach-apple/board.c @@ -14,12 +14,22 @@ DECLARE_GLOBAL_DATA_PTR; -static struct mm_region apple_mem_map[] = { +/* Apple M1 */ + +static struct mm_region t8103_mem_map[] = { { /* I/O */ .virt = 0x200000000, .phys = 0x200000000, - .size = 8UL * SZ_1G, + .size = 2UL * SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0x380000000, + .phys = 0x380000000, + .size = SZ_1G, .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN @@ -27,7 +37,7 @@ static struct mm_region apple_mem_map[] = { /* I/O */ .virt = 0x500000000, .phys = 0x500000000, - .size = 2UL * SZ_1G, + .size = SZ_1G, .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN @@ -63,15 +73,110 @@ static struct mm_region apple_mem_map[] = { .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_INNER_SHARE }, { - /* Empty entry for framebuffer */ + /* Framebuffer */ + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) | + PTE_BLOCK_INNER_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* List terminator */ 0, + } +}; + +/* Apple M1 Pro/Max */ + +static struct mm_region t6000_mem_map[] = { + { + /* I/O */ + .virt = 0x280000000, + .phys = 0x280000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0x380000000, + .phys = 0x380000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0x580000000, + .phys = 0x580000000, + .size = SZ_512M, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* PCIE */ + .virt = 0x5a0000000, + .phys = 0x5a0000000, + .size = SZ_512M, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRE) | + PTE_BLOCK_INNER_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* PCIE */ + .virt = 0x5c0000000, + .phys = 0x5c0000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRE) | + PTE_BLOCK_INNER_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0x700000000, + .phys = 0x700000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0xb00000000, + .phys = 0xb00000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0xf00000000, + .phys = 0xf00000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* I/O */ + .virt = 0x1300000000, + .phys = 0x1300000000, + .size = SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* RAM */ + .virt = 0x10000000000, + .phys = 0x10000000000, + .size = 16UL * SZ_1G, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE + }, { + /* Framebuffer */ + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) | + PTE_BLOCK_INNER_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN }, { /* List terminator */ 0, } }; -struct mm_region *mem_map = apple_mem_map; +struct mm_region *mem_map; int board_init(void) { @@ -80,59 +185,83 @@ int board_init(void) int dram_init(void) { + return fdtdec_setup_mem_size_base(); +} + +int dram_init_banksize(void) +{ + return fdtdec_setup_memory_banksize(); +} + +extern long fw_dtb_pointer; + +void *board_fdt_blob_setup(int *err) +{ + /* Return DTB pointer passed by m1n1 */ + *err = 0; + return (void *)fw_dtb_pointer; +} + +void build_mem_map(void) +{ ofnode node; - int index, ret; fdt_addr_t base; fdt_size_t size; + int i; + + if (of_machine_is_compatible("apple,t8103")) + mem_map = t8103_mem_map; + else if (of_machine_is_compatible("apple,t6000")) + mem_map = t6000_mem_map; + else if (of_machine_is_compatible("apple,t6001")) + mem_map = t6000_mem_map; + else + panic("Unsupported SoC\n"); - ret = fdtdec_setup_mem_size_base(); - if (ret) - return ret; + /* Find list terminator. */ + for (i = 0; mem_map[i].size || mem_map[i].attrs; i++) + ; + + /* Align RAM mapping to page boundaries */ + base = gd->bd->bi_dram[0].start; + size = gd->bd->bi_dram[0].size; + size += (base - ALIGN_DOWN(base, SZ_4K)); + base = ALIGN_DOWN(base, SZ_4K); + size = ALIGN(size, SZ_4K); /* Update RAM mapping */ - index = ARRAY_SIZE(apple_mem_map) - 3; - apple_mem_map[index].virt = gd->ram_base; - apple_mem_map[index].phys = gd->ram_base; - apple_mem_map[index].size = gd->ram_size; + mem_map[i - 2].virt = base; + mem_map[i - 2].phys = base; + mem_map[i - 2].size = size; node = ofnode_path("/chosen/framebuffer"); if (!ofnode_valid(node)) - return 0; + return; base = ofnode_get_addr_size(node, "reg", &size); if (base == FDT_ADDR_T_NONE) - return 0; + return; - /* Add framebuffer mapping */ - index = ARRAY_SIZE(apple_mem_map) - 2; - apple_mem_map[index].virt = base; - apple_mem_map[index].phys = base; - apple_mem_map[index].size = size; - apple_mem_map[index].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) | - PTE_BLOCK_INNER_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN; + /* Align framebuffer mapping to page boundaries */ + size += (base - ALIGN_DOWN(base, SZ_4K)); + base = ALIGN_DOWN(base, SZ_4K); + size = ALIGN(size, SZ_4K); - return 0; + /* Add framebuffer mapping */ + mem_map[i - 1].virt = base; + mem_map[i - 1].phys = base; + mem_map[i - 1].size = size; } -int dram_init_banksize(void) +void enable_caches(void) { - return fdtdec_setup_memory_banksize(); -} + build_mem_map(); -extern long fw_dtb_pointer; - -void *board_fdt_blob_setup(int *err) -{ - /* Return DTB pointer passed by m1n1 */ - *err = 0; - return (void *)fw_dtb_pointer; + icache_enable(); + dcache_enable(); } -ulong board_get_usable_ram_top(ulong total_size) +u64 get_page_table_size(void) { - /* - * Top part of RAM is used by firmware for things like the - * framebuffer. This gives us plenty of room to play with. - */ - return 0x980000000; + return SZ_256K; } -- 2.7.4