diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2019-04-29 09:39:09 -0700 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2019-10-08 09:11:14 +0200 |
| commit | aef149e9dd3d8a99840b0a7e5af06565cde3ad74 (patch) | |
| tree | 877de880ae32768d680e900a7f55cedc13d09733 /arch/arm/mach-versal | |
| parent | a69814c815b9a1a027f461ef26dbe7b2b8e258e4 (diff) | |
arm64: versal: Enable memory mapping via DT
Code reads DT and setup MMU table based on memory node. This will ensure
that only DT needs to be changed.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/arm/mach-versal')
| -rw-r--r-- | arch/arm/mach-versal/cpu.c | 36 | ||||
| -rw-r--r-- | arch/arm/mach-versal/include/mach/sys_proto.h | 1 |
2 files changed, 27 insertions, 10 deletions
diff --git a/arch/arm/mach-versal/cpu.c b/arch/arm/mach-versal/cpu.c index 70c1908ec4..dc6a9205be 100644 --- a/arch/arm/mach-versal/cpu.c +++ b/arch/arm/mach-versal/cpu.c @@ -12,14 +12,15 @@ DECLARE_GLOBAL_DATA_PTR; -static struct mm_region versal_mem_map[] = { +#define VERSAL_MEM_MAP_USED 6 + +#define DRAM_BANKS CONFIG_NR_DRAM_BANKS + +/* +1 is end of list which needs to be empty */ +#define VERSAL_MEM_MAP_MAX (VERSAL_MEM_MAP_USED + DRAM_BANKS + 1) + +static struct mm_region versal_mem_map[VERSAL_MEM_MAP_MAX] = { { - .virt = 0x0UL, - .phys = 0x0UL, - .size = 0x80000000UL, - .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | - PTE_BLOCK_INNER_SHARE - }, { .virt = 0x80000000UL, .phys = 0x80000000UL, .size = 0x70000000UL, @@ -59,12 +60,27 @@ static struct mm_region versal_mem_map[] = { .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN - }, { - /* List terminator */ - 0, } }; +void mem_map_fill(void) +{ + int banks = VERSAL_MEM_MAP_USED; + + 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) + break; + + versal_mem_map[banks].virt = gd->bd->bi_dram[i].start; + versal_mem_map[banks].phys = gd->bd->bi_dram[i].start; + versal_mem_map[banks].size = gd->bd->bi_dram[i].size; + versal_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE; + banks = banks + 1; + } +} + struct mm_region *mem_map = versal_mem_map; u64 get_page_table_size(void) diff --git a/arch/arm/mach-versal/include/mach/sys_proto.h b/arch/arm/mach-versal/include/mach/sys_proto.h index 1dc7bf6656..05934c28d6 100644 --- a/arch/arm/mach-versal/include/mach/sys_proto.h +++ b/arch/arm/mach-versal/include/mach/sys_proto.h @@ -9,3 +9,4 @@ enum { }; void tcm_init(u8 mode); +void mem_map_fill(void); |