From: Matthias Brugger mbrugger@suse.com
As part of the effort to create one binary for several bcm83x SoCs we use the SoC compatible to decide which IO base address we use.
Signed-off-by: Matthias Brugger mbrugger@suse.com ---
arch/arm/mach-bcm283x/Kconfig | 6 ---- arch/arm/mach-bcm283x/init.c | 60 ++++++++++++++++++++++++++++++++++- 2 files changed, 59 insertions(+), 7 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 9dcc96ba2e..214e1078eb 100644 --- a/arch/arm/mach-bcm283x/init.c +++ b/arch/arm/mach-bcm283x/init.c @@ -7,9 +7,49 @@ */
#include <common.h> +#include <dm/device.h> + +#define PDATA_BCM2835 0 +#define PDATA_BCM2836 1 +#define PDATA_BCM2837 2 +#define PDATA_BCM2838 3
extern unsigned long rpi_bcm283x_base;
+struct bcm283x_pdata { + unsigned long io_base; +}; + +struct bcm283x_pdata pdata_bcm283x[] = { + [PDATA_BCM2835] = { + .io_base = 0x20000000, + }, + [PDATA_BCM2836] = { + .io_base = 0x3f000000, + }, +#ifdef CONFIG_ARM64 + [PDATA_BCM2837] = { + .io_base = 0x3f000000, + }, + [PDATA_BCM2838] = { + .io_base = 0xfe000000, + }, +#endif +}; + +/* + * I/O address space varies on different chip versions. + * We set the base address by inspecting the DTB. + */ +static const struct udevice_id board_ids[] = { + { .compatible = "brcm,bcm2835", .data = PDATA_BCM2835}, + { .compatible = "brcm,bcm2836", .data = PDATA_BCM2836}, + { .compatible = "brcm,bcm2837", .data = PDATA_BCM2837}, + { .compatible = "brcm,bcm2838", .data = PDATA_BCM2838}, + { .compatible = "brcm,bcm2711", .data = PDATA_BCM2838}, + { }, +}; + int arch_cpu_init(void) { icache_enable(); @@ -19,10 +59,28 @@ int arch_cpu_init(void)
int mach_cpu_init(void) { - rpi_bcm283x_base = CONFIG_BCM283x_BASE; + const struct udevice_id *of_match = board_ids; + int ret; + + rpi_bcm283x_base = 0; + + while (of_match->compatible) { + struct bcm283x_pdata pdat; + + ret = fdt_node_check_compatible(gd->fdt_blob, 0, + of_match->compatible); + if (!ret) { + pdat = pdata_bcm283x[of_match->data]; + rpi_bcm283x_base = pdat.io_base; + break; + } + + of_match++; + }
return 0; } + #ifdef CONFIG_ARMV7_LPAE void enable_caches(void) {