meta-arm/meta-arm-bsp/recipes-bsp/u-boot/u-boot/fvp-baser-aemv8r64/0002-vexpress64-add-MPU-memory-map-for-the-BASER_FVP.patch

From 5b42322cb57692dbea7d2c39fd8769b6f0f6b7af Mon Sep 17 00:00:00 2001
From: Qi Feng <qi.feng@arm.com>
Date: Tue, 26 Jul 2022 18:13:23 +0800
Subject: [PATCH] vexpress64: add MPU memory map for the BASER_FVP

The previous patch added support for initializing an Armv8 MPU. There is only an
MPU at S-EL2 on the BASER_FVP, so add a platform-specific MPU memory map.

See https://developer.arm.com/documentation/100964/1117/Base-Platform/Base---memory/BaseR-Platform-memory-map

Upstream-Status: Inappropriate [other]
  Implementation pending further discussion
Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Signed-off-by: Qi Feng <qi.feng@arm.com>

---
 board/armltd/vexpress64/vexpress64.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/board/armltd/vexpress64/vexpress64.c b/board/armltd/vexpress64/vexpress64.c
index af326dc6f4..2310d18eb7 100644
--- a/board/armltd/vexpress64/vexpress64.c
+++ b/board/armltd/vexpress64/vexpress64.c
@@ -19,6 +19,7 @@
 #include <dm/platform_data/serial_pl01x.h>
 #include "pcie.h"
 #include <asm/armv8/mmu.h>
+#include <asm/armv8/mpu.h>
 #ifdef CONFIG_VIRTIO_NET
 #include <virtio_types.h>
 #include <virtio.h>
@@ -37,6 +38,27 @@ U_BOOT_DRVINFO(vexpress_serials) = {
 	.plat = &serial_plat,
 };
 
+static struct mpu_region vexpress64_aemv8r_mem_map[] = {
+	{
+		.start = 0x0UL,
+		.end = 0x7fffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_NORMAL)
+	}, {
+		.start = 0x80000000UL,
+		.end = 0xffffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_DEVICE_NGNRNE)
+	}, {
+		.start = 0x100000000UL,
+		.end = 0xffffffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_NORMAL)
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mpu_region *mpu_mem_map = vexpress64_aemv8r_mem_map;
+
 static struct mm_region vexpress64_mem_map[] = {
 	{
 		.virt = V2M_PA_BASE,