File 0026-rpi4-add-a-mapping-for-the-PCIe-XHC.patch of Package u-boot.16418
From 79fa8b6df328a35f63046ac155ed4ab33fa78d66 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Mon, 4 May 2020 14:45:18 +0200
Subject: [PATCH] rpi4: add a mapping for the PCIe XHCI controller MMIO
registers (ARM 64bit)
Create a non-cacheable mapping for the 0x600000000 physical memory region,
where MMIO registers for the PCIe XHCI controller are instantiated by the
PCIe bridge.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
arch/arm/mach-bcm283x/init.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
index 42953561a7..6a748da171 100644
--- a/arch/arm/mach-bcm283x/init.c
+++ b/arch/arm/mach-bcm283x/init.c
@@ -11,10 +11,15 @@
#include <dm/device.h>
#include <fdt_support.h>
+#define BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS 0x600000000UL
+#define BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE 0x800000UL
+
#ifdef CONFIG_ARM64
#include <asm/armv8/mmu.h>
-static struct mm_region bcm283x_mem_map[] = {
+#define MAX_MAP_MAX_ENTRIES (4)
+
+static struct mm_region bcm283x_mem_map[MAX_MAP_MAX_ENTRIES] = {
{
.virt = 0x00000000UL,
.phys = 0x00000000UL,
@@ -34,7 +39,7 @@ static struct mm_region bcm283x_mem_map[] = {
}
};
-static struct mm_region bcm2711_mem_map[] = {
+static struct mm_region bcm2711_mem_map[MAX_MAP_MAX_ENTRIES] = {
{
.virt = 0x00000000UL,
.phys = 0x00000000UL,
@@ -48,6 +53,13 @@ static struct mm_region bcm2711_mem_map[] = {
.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,
@@ -71,7 +83,7 @@ static void _rpi_update_mem_map(struct mm_region *pd)
{
int i;
- for (i = 0; i < 2; i++) {
+ for (i = 0; i < MAX_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;
