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// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2012 Stephen Warren
*
* See file CREDITS for list of people who contributed to this
* project.
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <dm/device.h>
#include <fdt_support.h>
#include <asm/global_data.h>
#define BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS 0x600000000UL
#define BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE 0x400000UL
#ifdef CONFIG_ARM64
#include <asm/armv8/mmu.h>
#define MEM_MAP_MAX_ENTRIES (4)
static struct mm_region bcm283x_mem_map[MEM_MAP_MAX_ENTRIES] = {
{
.virt = 0x00000000UL,
.phys = 0x00000000UL,
.size = 0x3f000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
.virt = 0x3f000000UL,
.phys = 0x3f000000UL,
.size = 0x01000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
/* List terminator */
0,
}
};
static struct mm_region bcm2711_mem_map[MEM_MAP_MAX_ENTRIES] = {
{
.virt = 0x00000000UL,
.phys = 0x00000000UL,
.size = 0xfc000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
.virt = 0xfc000000UL,
.phys = 0xfc000000UL,
.size = 0x03800000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
.phys = BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
.size = BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
/* List terminator */
0,
}
};
struct mm_region *mem_map = bcm283x_mem_map;
/*
* I/O address space varies on different chip versions.
* We set the base address by inspecting the DTB.
*/
static const struct udevice_id board_ids[] = {
{ .compatible = "brcm,bcm2837", .data = (ulong)&bcm283x_mem_map},
{ .compatible = "brcm,bcm2838", .data = (ulong)&bcm2711_mem_map},
{ .compatible = "brcm,bcm2711", .data = (ulong)&bcm2711_mem_map},
{ },
};
static void _rpi_update_mem_map(struct mm_region *pd)
{
int i;
for (i = 0; i < MEM_MAP_MAX_ENTRIES; i++) {
mem_map[i].virt = pd[i].virt;
mem_map[i].phys = pd[i].phys;
mem_map[i].size = pd[i].size;
mem_map[i].attrs = pd[i].attrs;
}
}
static void rpi_update_mem_map(void)
{
int ret;
struct mm_region *mm;
const struct udevice_id *of_match = board_ids;
while (of_match->compatible) {
ret = fdt_node_check_compatible(gd->fdt_blob, 0,
of_match->compatible);
if (!ret) {
mm = (struct mm_region *)of_match->data;
_rpi_update_mem_map(mm);
break;
}
of_match++;
}
}
#else
static void rpi_update_mem_map(void) {}
#endif
unsigned long rpi_bcm283x_base = 0x3f000000;
int arch_cpu_init(void)
{
icache_enable();
return 0;
}
int mach_cpu_init(void)
{
int ret, soc_offset;
u64 io_base, size;
rpi_update_mem_map();
/* Get IO base from device tree */
soc_offset = fdt_path_offset(gd->fdt_blob, "/soc");
if (soc_offset < 0)
return soc_offset;
ret = fdt_read_range((void *)gd->fdt_blob, soc_offset, 0, NULL,
&io_base, &size);
if (ret)
return ret;
rpi_bcm283x_base = io_base;
return 0;
}
#ifdef CONFIG_ARMV7_LPAE
#ifdef CONFIG_TARGET_RPI_4_32B
#define BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT 0xffc00000UL
#include <addr_map.h>
#include <asm/system.h>
int init_addr_map(void)
{
mmu_set_region_dcache_behaviour_phys(BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT,
BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE,
DCACHE_OFF);
/* identity mapping for 0..BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT */
addrmap_set_entry(0, 0, BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT, 0);
/* XHCI MMIO on PCIe at BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT */
addrmap_set_entry(BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT,
BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE, 1);
return 0;
}
#endif
void enable_caches(void)
{
dcache_enable();
}
#endif
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