2 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/system.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/soc.h>
15 #include <asm/armv8/mmu.h>
17 DECLARE_GLOBAL_DATA_PTR;
20 #define MVEBU_GPIO_NB_REG_BASE (MVEBU_REGISTER(0x13800))
22 #define MVEBU_TEST_PIN_LATCH_N (MVEBU_GPIO_NB_REG_BASE + 0x8)
23 #define MVEBU_XTAL_MODE_MASK BIT(9)
24 #define MVEBU_XTAL_MODE_OFFS 9
25 #define MVEBU_XTAL_CLOCK_25MHZ 0x0
26 #define MVEBU_XTAL_CLOCK_40MHZ 0x1
28 #define MVEBU_NB_WARM_RST_REG (MVEBU_GPIO_NB_REG_BASE + 0x40)
29 #define MVEBU_NB_WARM_RST_MAGIC_NUM 0x1d1e
31 static struct mm_region mvebu_mem_map[] = {
37 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
41 /* SRAM, MMIO regions */
44 .size = 0x02000000UL, /* 32MiB internal registers */
45 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
54 struct mm_region *mem_map = mvebu_mem_map;
57 * On ARMv8, MBus is not configured in U-Boot. To enable compilation
58 * of the already implemented drivers, lets add a dummy version of
59 * this function so that linking does not fail.
61 const struct mbus_dram_target_info *mvebu_mbus_dram_info(void)
66 void reset_cpu(ulong ignored)
69 * Write magic number of 0x1d1e to North Bridge Warm Reset register
70 * to trigger warm reset
72 writel(MVEBU_NB_WARM_RST_MAGIC_NUM, MVEBU_NB_WARM_RST_REG);
78 * return: reference clock in MHz (25 or 40)
84 regval = (readl(MVEBU_TEST_PIN_LATCH_N) & MVEBU_XTAL_MODE_MASK) >>
87 if (regval == MVEBU_XTAL_CLOCK_25MHZ)
93 /* DRAM init code ... */
95 static const void *get_memory_reg_prop(const void *fdt, int *lenp)
99 offset = fdt_path_offset(fdt, "/memory");
103 return fdt_getprop(fdt, offset, "reg", lenp);
108 const void *fdt = gd->fdt_blob;
112 ac = fdt_address_cells(fdt, 0);
113 sc = fdt_size_cells(fdt, 0);
114 if (ac < 0 || sc < 1 || sc > 2) {
115 printf("invalid address/size cells\n");
119 val = get_memory_reg_prop(fdt, &len);
120 if (len / sizeof(*val) < ac + sc)
125 gd->ram_size = fdtdec_get_number(val, sc);
127 debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
132 void dram_init_banksize(void)
134 const void *fdt = gd->fdt_blob;
136 int ac, sc, cells, len, i;
138 val = get_memory_reg_prop(fdt, &len);
142 ac = fdt_address_cells(fdt, 0);
143 sc = fdt_size_cells(fdt, 0);
144 if (ac < 1 || sc > 2 || sc < 1 || sc > 2) {
145 printf("invalid address/size cells\n");
153 for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
155 gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
157 gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
160 debug("DRAM bank %d: start = %08lx, size = %08lx\n",
161 i, (unsigned long)gd->bd->bi_dram[i].start,
162 (unsigned long)gd->bd->bi_dram[i].size);
166 int arch_cpu_init(void)
168 /* Nothing to do (yet) */
172 int arch_early_init_r(void)
177 /* Call the comphy code via the MISC uclass driver */
178 ret = uclass_get_device(UCLASS_MISC, 0, &dev);
180 debug("COMPHY init failed: %d\n", ret);
184 /* Cause the SATA device to do its early init */
185 uclass_first_device(UCLASS_AHCI, &dev);