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authorMatthias Brugger <mbrugger@suse.com>2019-11-19 16:01:04 +0100
committerMatthias Brugger <mbrugger@suse.com>2019-11-24 10:46:27 +0100
commitdd47ca787332a1d4bd60d8ad4d7b5216fc92bbb0 (patch)
treef8f3e828bf72965581e1071ea3fed1113ad053fd /arch/arm/mach-bcm283x
parent8e3361c88ae322826c97ecc4b70df26d9fabc9ad (diff)
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>
Diffstat (limited to 'arch/arm/mach-bcm283x')
-rw-r--r--arch/arm/mach-bcm283x/Kconfig6
-rw-r--r--arch/arm/mach-bcm283x/init.c20
2 files changed, 18 insertions, 8 deletions
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)
{