diff options
Diffstat (limited to 'arch/arm/mach-mvebu/armada3700')
| -rw-r--r-- | arch/arm/mach-mvebu/armada3700/cpu.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/armada3700/cpu.c b/arch/arm/mach-mvebu/armada3700/cpu.c index 959a909..17d2d43 100644 --- a/arch/arm/mach-mvebu/armada3700/cpu.c +++ b/arch/arm/mach-mvebu/armada3700/cpu.c @@ -50,6 +50,8 @@ #define A3700_PTE_BLOCK_DEVICE \ (PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE) +#define PCIE_PATH "/soc/pcie@d0070000" + DECLARE_GLOBAL_DATA_PTR; static struct mm_region mvebu_mem_map[MAX_MEM_MAP_REGIONS] = { @@ -259,6 +261,56 @@ int a3700_dram_init_banksize(void) return 0; } +static u32 find_pcie_window_base(void) +{ + int win; + + for (win = 0; win < MVEBU_CPU_DEC_WINS; ++win) { + u32 base, tgt; + + /* skip disabled windows */ + if (get_cpu_dec_win(win, &tgt, &base, NULL)) + continue; + + if (tgt == MVEBU_CPU_DEC_WIN_CTRL_TGT_PCIE) + return base; + } + + return -1; +} + +int a3700_fdt_fix_pcie_regions(void *blob) +{ + u32 new_ranges[14], base; + const u32 *ranges; + int node, len; + + node = fdt_path_offset(blob, PCIE_PATH); + if (node < 0) + return node; + + ranges = fdt_getprop(blob, node, "ranges", &len); + if (!ranges) + return -ENOENT; + + if (len != sizeof(new_ranges)) + return -EINVAL; + + memcpy(new_ranges, ranges, len); + + base = find_pcie_window_base(); + if (base == -1) + return -ENOENT; + + new_ranges[2] = cpu_to_fdt32(base); + new_ranges[4] = new_ranges[2]; + + new_ranges[9] = cpu_to_fdt32(base + 0x1000000); + new_ranges[11] = new_ranges[9]; + + return fdt_setprop_inplace(blob, node, "ranges", new_ranges, len); +} + void reset_cpu(ulong ignored) { /* |