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ARM: bcm283x: Set rpi_bcm283x_base at run-time

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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>
This commit is contained in:
Matthias Brugger 2019-11-19 16:01:04 +01:00
parent 8e3361c88a
commit dd47ca7873
2 changed files with 18 additions and 8 deletions
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6
arch/arm/mach-bcm283x/Kconfig
View file

@ -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

20
arch/arm/mach-bcm283x/init.c
View file

@ -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)
{