From: Matthias Brugger <mbrugger@suse.com>
Date: Tue, 19 Nov 2019 15:01:04 +0000 (+0100)
Subject: ARM: bcm283x: Set rpi_bcm283x_base at run-time
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-logo.png?a=commitdiff_plain;h=dd47ca787332a1d4bd60d8ad4d7b5216fc92bbb0;p=u-boot.git

ARM: bcm283x: Set rpi_bcm283x_base at run-time

As part of the effort to create one binary for several bcm83x SoCs
we read the IO base address from device-tree.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---

diff --git a/arch/arm/mach-bcm283x/Kconfig b/arch/arm/mach-bcm283x/Kconfig
index b08275f598..e8e0ff0eb4 100644
--- a/arch/arm/mach-bcm283x/Kconfig
+++ b/arch/arm/mach-bcm283x/Kconfig
@@ -202,10 +202,4 @@ config SYS_SOC
 config SYS_CONFIG_NAME
 	default "rpi"
 
-config BCM283x_BASE
-	hex
-	default "0x20000000" if BCM2835
-	default "0x3f000000" if BCM2836 || BCM2837
-	default "0xfe000000" if BCM2711
-
 endmenu
diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
index d36017e823..b3f3dfabea 100644
--- a/arch/arm/mach-bcm283x/init.c
+++ b/arch/arm/mach-bcm283x/init.c
@@ -7,8 +7,10 @@
  */
 
 #include <common.h>
+#include <dm/device.h>
+#include <fdt_support.h>
 
-unsigned long rpi_bcm283x_base;
+unsigned long rpi_bcm283x_base = 0x3f000000;
 
 int arch_cpu_init(void)
 {
@@ -19,10 +21,24 @@ int arch_cpu_init(void)
 
 int mach_cpu_init(void)
 {
-	rpi_bcm283x_base = CONFIG_BCM283x_BASE;
+	int ret, soc_offset;
+	u64 io_base, size;
+
+	/* 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
 void enable_caches(void)
 {