142 lines
2.7 KiB
C
142 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <init.h>
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#include <dm/device.h>
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#include <fdt_support.h>
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#ifdef CONFIG_ARM64
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#include <asm/armv8/mmu.h>
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static struct mm_region bcm283x_mem_map[] = {
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{
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.virt = 0x00000000UL,
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.phys = 0x00000000UL,
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.size = 0x3f000000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
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PTE_BLOCK_INNER_SHARE
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}, {
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.virt = 0x3f000000UL,
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.phys = 0x3f000000UL,
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.size = 0x01000000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
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PTE_BLOCK_NON_SHARE |
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PTE_BLOCK_PXN | PTE_BLOCK_UXN
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}, {
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/* List terminator */
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0,
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}
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};
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static struct mm_region bcm2711_mem_map[] = {
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{
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.virt = 0x00000000UL,
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.phys = 0x00000000UL,
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.size = 0xfe000000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
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PTE_BLOCK_INNER_SHARE
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}, {
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.virt = 0xfc000000UL,
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.phys = 0xfc000000UL,
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.size = 0x03800000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
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PTE_BLOCK_NON_SHARE |
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PTE_BLOCK_PXN | PTE_BLOCK_UXN
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}, {
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/* List terminator */
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0,
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}
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};
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struct mm_region *mem_map = bcm283x_mem_map;
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/*
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* I/O address space varies on different chip versions.
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* We set the base address by inspecting the DTB.
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*/
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static const struct udevice_id board_ids[] = {
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{ .compatible = "brcm,bcm2837", .data = (ulong)&bcm283x_mem_map},
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{ .compatible = "brcm,bcm2838", .data = (ulong)&bcm2711_mem_map},
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{ .compatible = "brcm,bcm2711", .data = (ulong)&bcm2711_mem_map},
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{ },
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};
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static void _rpi_update_mem_map(struct mm_region *pd)
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{
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int i;
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for (i = 0; i < 2; i++) {
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mem_map[i].virt = pd[i].virt;
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mem_map[i].phys = pd[i].phys;
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mem_map[i].size = pd[i].size;
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mem_map[i].attrs = pd[i].attrs;
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}
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}
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static void rpi_update_mem_map(void)
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{
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int ret;
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struct mm_region *mm;
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const struct udevice_id *of_match = board_ids;
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while (of_match->compatible) {
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ret = fdt_node_check_compatible(gd->fdt_blob, 0,
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of_match->compatible);
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if (!ret) {
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mm = (struct mm_region *)of_match->data;
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_rpi_update_mem_map(mm);
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break;
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}
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of_match++;
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}
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}
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#else
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static void rpi_update_mem_map(void) {}
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#endif
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unsigned long rpi_bcm283x_base = 0x3f000000;
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int arch_cpu_init(void)
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{
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icache_enable();
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return 0;
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}
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int mach_cpu_init(void)
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{
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int ret, soc_offset;
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u64 io_base, size;
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rpi_update_mem_map();
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/* Get IO base from device tree */
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soc_offset = fdt_path_offset(gd->fdt_blob, "/soc");
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if (soc_offset < 0)
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return soc_offset;
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ret = fdt_read_range((void *)gd->fdt_blob, soc_offset, 0, NULL,
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&io_base, &size);
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if (ret)
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return ret;
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rpi_bcm283x_base = io_base;
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return 0;
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}
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#ifdef CONFIG_ARMV7_LPAE
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void enable_caches(void)
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{
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dcache_enable();
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}
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#endif
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