--- /dev/null
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <asm/armv8/mmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Armada 3700 */
+#define MVEBU_GPIO_NB_REG_BASE (MVEBU_REGISTER(0x13800))
+
+#define MVEBU_TEST_PIN_LATCH_N (MVEBU_GPIO_NB_REG_BASE + 0x8)
+#define MVEBU_XTAL_MODE_MASK BIT(9)
+#define MVEBU_XTAL_MODE_OFFS 9
+#define MVEBU_XTAL_CLOCK_25MHZ 0x0
+#define MVEBU_XTAL_CLOCK_40MHZ 0x1
+
+#define MVEBU_NB_WARM_RST_REG (MVEBU_GPIO_NB_REG_BASE + 0x40)
+#define MVEBU_NB_WARM_RST_MAGIC_NUM 0x1d1e
+
+static struct mm_region mvebu_mem_map[] = {
+ {
+ /* RAM */
+ .phys = 0x0UL,
+ .virt = 0x0UL,
+ .size = 0x80000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_INNER_SHARE
+ },
+ {
+ /* SRAM, MMIO regions */
+ .phys = 0xd0000000UL,
+ .virt = 0xd0000000UL,
+ .size = 0x02000000UL, /* 32MiB internal registers */
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE
+ },
+ {
+ /* List terminator */
+ 0,
+ }
+};
+
+struct mm_region *mem_map = mvebu_mem_map;
+
+/*
+ * On ARMv8, MBus is not configured in U-Boot. To enable compilation
+ * of the already implemented drivers, lets add a dummy version of
+ * this function so that linking does not fail.
+ */
+const struct mbus_dram_target_info *mvebu_mbus_dram_info(void)
+{
+ return NULL;
+}
+
+void reset_cpu(ulong ignored)
+{
+ /*
+ * Write magic number of 0x1d1e to North Bridge Warm Reset register
+ * to trigger warm reset
+ */
+ writel(MVEBU_NB_WARM_RST_MAGIC_NUM, MVEBU_NB_WARM_RST_REG);
+}
+
+/*
+ * get_ref_clk
+ *
+ * return: reference clock in MHz (25 or 40)
+ */
+u32 get_ref_clk(void)
+{
+ u32 regval;
+
+ regval = (readl(MVEBU_TEST_PIN_LATCH_N) & MVEBU_XTAL_MODE_MASK) >>
+ MVEBU_XTAL_MODE_OFFS;
+
+ if (regval == MVEBU_XTAL_CLOCK_25MHZ)
+ return 25;
+ else
+ return 40;
+}
+
+/* DRAM init code ... */
+
+static const void *get_memory_reg_prop(const void *fdt, int *lenp)
+{
+ int offset;
+
+ offset = fdt_path_offset(fdt, "/memory");
+ if (offset < 0)
+ return NULL;
+
+ return fdt_getprop(fdt, offset, "reg", lenp);
+}
+
+int dram_init(void)
+{
+ const void *fdt = gd->fdt_blob;
+ const fdt32_t *val;
+ int ac, sc, len;
+
+ ac = fdt_address_cells(fdt, 0);
+ sc = fdt_size_cells(fdt, 0);
+ if (ac < 0 || sc < 1 || sc > 2) {
+ printf("invalid address/size cells\n");
+ return -EINVAL;
+ }
+
+ val = get_memory_reg_prop(fdt, &len);
+ if (len / sizeof(*val) < ac + sc)
+ return -EINVAL;
+
+ val += ac;
+
+ gd->ram_size = fdtdec_get_number(val, sc);
+
+ debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
+
+ return 0;
+}
+
+void dram_init_banksize(void)
+{
+ const void *fdt = gd->fdt_blob;
+ const fdt32_t *val;
+ int ac, sc, cells, len, i;
+
+ val = get_memory_reg_prop(fdt, &len);
+ if (len < 0)
+ return;
+
+ ac = fdt_address_cells(fdt, 0);
+ sc = fdt_size_cells(fdt, 0);
+ if (ac < 1 || sc > 2 || sc < 1 || sc > 2) {
+ printf("invalid address/size cells\n");
+ return;
+ }
+
+ cells = ac + sc;
+
+ len /= sizeof(*val);
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
+ i++, len -= cells) {
+ gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
+ val += ac;
+ gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
+ val += sc;
+
+ debug("DRAM bank %d: start = %08lx, size = %08lx\n",
+ i, (unsigned long)gd->bd->bi_dram[i].start,
+ (unsigned long)gd->bd->bi_dram[i].size);
+ }
+}
+
+int arch_cpu_init(void)
+{
+ /* Nothing to do (yet) */
+ return 0;
+}
+
+int arch_early_init_r(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ /* Call the comphy code via the MISC uclass driver */
+ ret = uclass_get_device(UCLASS_MISC, 0, &dev);
+ if (ret) {
+ debug("COMPHY init failed: %d\n", ret);
+ return -ENODEV;
+ }
+
+ /* Cause the SATA device to do its early init */
+ uclass_first_device(UCLASS_AHCI, &dev);
+
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <ahci.h>
+#include <dm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Dummy implementation that can be overwritten by a board
+ * specific function
+ */
+__weak int board_ahci_enable(void)
+{
+ return 0;
+}
+
+static int mvebu_ahci_probe(struct udevice *dev)
+{
+ /*
+ * Board specific SATA / AHCI enable code, e.g. enable the
+ * AHCI power or deassert reset
+ */
+ board_ahci_enable();
+
+ ahci_init(dev_get_addr_ptr(dev));
+
+ return 0;
+}
+
+static const struct udevice_id mvebu_ahci_ids[] = {
+ { .compatible = "marvell,armada-3700-ahci" },
+ { }
+};
+
+U_BOOT_DRIVER(ahci_mvebu_drv) = {
+ .name = "ahci_mvebu",
+ .id = UCLASS_AHCI,
+ .of_match = mvebu_ahci_ids,
+ .probe = mvebu_ahci_probe,
+};
projects / oweals / u-boot.git / commitdiff