zynq: Add OF ram initialization support
Read ram size directly from DTB. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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@ -5,6 +5,7 @@
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <netdev.h>
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#include <zynqpl.h>
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#include <asm/arch/hardware.h>
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@ -134,8 +135,27 @@ int board_mmc_init(bd_t *bd)
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int dram_init(void)
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{
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gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
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#ifdef CONFIG_OF_CONTROL
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int node;
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fdt_addr_t addr;
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fdt_size_t size;
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const void *blob = gd->fdt_blob;
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node = fdt_node_offset_by_prop_value(blob, -1, "device_type",
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"memory", 7);
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if (node == -FDT_ERR_NOTFOUND) {
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debug("ZYNQ DRAM: Can't get memory node\n");
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return -1;
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}
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addr = fdtdec_get_addr_size(blob, node, "reg", &size);
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if (addr == FDT_ADDR_T_NONE || size == 0) {
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debug("ZYNQ DRAM: Can't get base address or size\n");
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return -1;
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}
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gd->ram_size = size;
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#else
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gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
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#endif
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zynq_ddrc_init();
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return 0;
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