2 * Copyright (C) 2008 Atmel Corporation
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/sdram.h>
11 #include <asm/arch/clk.h>
12 #include <asm/arch/hmatrix.h>
13 #include <asm/arch/mmu.h>
14 #include <asm/arch/portmux.h>
16 DECLARE_GLOBAL_DATA_PTR;
18 struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
20 .virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
21 .nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
22 .phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
25 .virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
26 .nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT,
27 .phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
28 | MMU_VMR_CACHE_WRBACK,
32 static const struct sdram_config sdram_config = {
33 /* MT48LC4M32B2P-6 (16 MB) */
34 .data_bits = SDRAM_DATA_32BIT,
46 .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
49 int board_early_init_f(void)
51 /* Enable SDRAM in the EBI mux */
52 hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
54 portmux_enable_ebi(32, 23, 0, PORTMUX_DRIVE_HIGH);
55 portmux_enable_usart3(PORTMUX_DRIVE_MIN);
56 #if defined(CONFIG_MACB)
57 portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
59 #if defined(CONFIG_MMC)
60 portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
66 phys_size_t initdram(int board_type)
68 unsigned long expected_size;
69 unsigned long actual_size;
72 sdram_base = uncached(EBI_SDRAM_BASE);
74 expected_size = sdram_init(sdram_base, &sdram_config);
75 actual_size = get_ram_size(sdram_base, expected_size);
77 if (expected_size != actual_size)
78 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
79 actual_size >> 20, expected_size >> 20);
84 int board_early_init_r(void)
86 gd->bd->bi_phy_id[0] = 0x01;
90 #if defined(CONFIG_MACB) && defined(CONFIG_CMD_NET)
91 int board_eth_init(bd_t *bi)
93 return macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0,