diff options
Diffstat (limited to 'arch/arm/boards/raspberry-pi/rpi-common.c')
| -rw-r--r-- | arch/arm/boards/raspberry-pi/rpi-common.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/boards/raspberry-pi/rpi-common.c b/arch/arm/boards/raspberry-pi/rpi-common.c index b5d16a15ca..fffa882a70 100644 --- a/arch/arm/boards/raspberry-pi/rpi-common.c +++ b/arch/arm/boards/raspberry-pi/rpi-common.c @@ -16,21 +16,26 @@ #include <common.h> #include <init.h> #include <fs.h> +#include <of.h> #include <linux/stat.h> #include <linux/clk.h> #include <linux/clkdev.h> #include <envfs.h> #include <malloc.h> +#include <libfile.h> #include <gpio.h> #include <net.h> #include <led.h> #include <asm/armlinux.h> +#include <asm/barebox-arm.h> #include <generated/mach-types.h> +#include <linux/sizes.h> #include <mach/core.h> #include <mach/mbox.h> #include "rpi.h" +#include "lowlevel.h" struct msg_get_arm_mem { struct bcm2835_mbox_hdr hdr; @@ -370,12 +375,41 @@ static int rpi_env_init(void) return 0; } +static void rpi_vc_fdt(void) +{ + void *saved_vc_fdt; + struct fdt_header *oftree; + unsigned long magic, size; + + /* VideoCore FDT was copied in PBL just above Barebox memory */ + saved_vc_fdt = (void *)(arm_mem_endmem_get()); + + oftree = saved_vc_fdt; + magic = be32_to_cpu(oftree->magic); + if (magic != FDT_MAGIC) { + pr_err("videocore fdt saved in pbl has invalid magic\n"); + + if (magic == VIDEOCORE_FDT_ERROR) { + pr_err("there was an error copying fdt in pbl: %d\n", + be32_to_cpu(oftree->totalsize)); + } + return; + } + + size = be32_to_cpu(oftree->totalsize); + if (write_file("/vc.dtb", saved_vc_fdt, size)) { + pr_err("failed to save videocore fdt to a file\n"); + return; + } +} + static int rpi_devices_init(void) { rpi_model_init(); bcm2835_register_fb(); armlinux_set_architecture(MACH_TYPE_BCM2708); rpi_env_init(); + rpi_vc_fdt(); return 0; } late_initcall(rpi_devices_init); |