diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 44d347e..0f44b04 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -50,12 +50,133 @@ int board_early_init_r(void) return 0; } +#if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE) +/* + * fdt_get_reg - Fill buffer by information from DT + */ +static phys_size_t fdt_get_reg(const void *fdt, int nodeoffset, void *buf, + const u32 *cell, int n) +{ + int i = 0, b, banks; + int parent_offset = fdt_parent_offset(fdt, nodeoffset); + int address_cells = fdt_address_cells(fdt, parent_offset); + int size_cells = fdt_size_cells(fdt, parent_offset); + char *p = buf; + phys_addr_t val; + phys_size_t vals; + + debug("%s: addr_cells=%x, size_cell=%x, buf=%p, cell=%p\n", + __func__, address_cells, size_cells, buf, cell); + + /* Check memory bank setup */ + banks = n % (address_cells + size_cells); + if (banks) + panic("Incorrect memory setup cells=%d, ac=%d, sc=%d\n", + n, address_cells, size_cells); + + banks = n / (address_cells + size_cells); + + for (b = 0; b < banks; b++) { + debug("%s: Bank #%d:\n", __func__, b); + if (address_cells == 2) { + val = cell[i + 1]; + val <<= 32; + val |= cell[i]; + val = fdt64_to_cpu(val); + debug("%s: addr64=%llx, ptr=%p, cell=%p\n", + __func__, val, p, &cell[i]); + *(phys_addr_t *)p = val; + } else { + debug("%s: addr32=%x, ptr=%p\n", + __func__, fdt32_to_cpu(cell[i]), p); + *(phys_addr_t *)p = fdt32_to_cpu(cell[i]); + } + p += sizeof(phys_addr_t); + i += address_cells; + + debug("%s: pa=%p, i=%x, size=%zu\n", __func__, p, i, + sizeof(phys_addr_t)); + + if (size_cells == 2) { + vals = cell[i + 1]; + vals <<= 32; + vals |= cell[i]; + vals = fdt64_to_cpu(vals); + + debug("%s: size64=%llx, ptr=%p, cell=%p\n", + __func__, vals, p, &cell[i]); + *(phys_size_t *)p = vals; + } else { + debug("%s: size32=%x, ptr=%p\n", + __func__, fdt32_to_cpu(cell[i]), p); + *(phys_size_t *)p = fdt32_to_cpu(cell[i]); + } + p += sizeof(phys_size_t); + i += size_cells; + + debug("%s: ps=%p, i=%x, size=%zu\n", + __func__, p, i, sizeof(phys_size_t)); + } + + /* Return the first address size */ + return *(phys_size_t *)((char *)buf + sizeof(phys_addr_t)); +} + +#define FDT_REG_SIZE sizeof(u32) +/* Temp location for sharing data for storing */ +/* Up to 64-bit address + 64-bit size */ +static u8 tmp[CONFIG_NR_DRAM_BANKS * 16]; + +void dram_init_banksize(void) +{ + int bank; + + memcpy(&gd->bd->bi_dram[0], &tmp, sizeof(tmp)); + + for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { + debug("Bank #%d: start %llx\n", bank, + (unsigned long long)gd->bd->bi_dram[bank].start); + debug("Bank #%d: size %llx\n", bank, + (unsigned long long)gd->bd->bi_dram[bank].size); + } +} + +int dram_init(void) +{ + int node, len; + const void *blob = gd->fdt_blob; + const u32 *cell; + + memset(&tmp, 0, sizeof(tmp)); + + /* find or create "/memory" node. */ + node = fdt_subnode_offset(blob, 0, "memory"); + if (node < 0) { + printf("%s: Can't get memory node\n", __func__); + return node; + } + + /* Get pointer to cells and lenght of it */ + cell = fdt_getprop(blob, node, "reg", &len); + if (!cell) { + printf("%s: Can't get reg property\n", __func__); + return -1; + } + + gd->ram_size = fdt_get_reg(blob, node, &tmp, cell, len / FDT_REG_SIZE); + + debug("%s: Initial DRAM size %llx\n", __func__, gd->ram_size); + + return 0; +} +#else int dram_init(void) { gd->ram_size = CONFIG_SYS_SDRAM_SIZE; return 0; } +#endif void reset_cpu(ulong addr) { |