diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch b/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch new file mode 100644 index 0000000000..744e35985e --- /dev/null +++ b/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch @@ -0,0 +1,53 @@ +commit 22250a38f970c173acb1b3fb30e6dce1430f697b +Author: Hauke Mehrtens <hauke@hauke-m.de> +Date: Thu Sep 19 22:48:35 2013 +0200 + + MIPS: BCM47XX: add EARLY_PRINTK_8250 support + + The BCM47xx SoCs have a 8250 serial compatible console at address + 0x18000300 and an other at 0x18000400. On most devices 0x18000300 is + wired to some pins on the board, we should use that. + This is the smae for the AI (bcma) and the SB (ssb) bus, this is some + offset on the chip common core. + + Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -117,6 +117,8 @@ config BCM47XX + select NO_EXCEPT_FILL + select SYS_SUPPORTS_32BIT_KERNEL + select SYS_SUPPORTS_LITTLE_ENDIAN ++ select SYS_HAS_EARLY_PRINTK ++ select EARLY_PRINTK_8250 if EARLY_PRINTK + help + Support for BCM47XX based boards + +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -28,6 +28,8 @@ + #include <linux/types.h> + #include <linux/kernel.h> + #include <linux/spinlock.h> ++#include <linux/ssb/ssb_driver_chipcommon.h> ++#include <linux/ssb/ssb_regs.h> + #include <linux/smp.h> + #include <asm/bootinfo.h> + #include <bcm47xx.h> +@@ -94,9 +96,16 @@ static __init void prom_init_mem(void) + add_memory_region(0, mem, BOOT_MEM_RAM); + } + ++/* ++ * This is the first serial on the chip common core, it is at this position ++ * for sb (ssb) and ai (bcma) bus. ++ */ ++#define BCM47XX_SERIAL_ADDR (SSB_ENUM_BASE + SSB_CHIPCO_UART0_DATA) ++ + void __init prom_init(void) + { + prom_init_mem(); ++ setup_8250_early_printk_port(CKSEG1ADDR(BCM47XX_SERIAL_ADDR), 0, 0); + } + + void __init prom_free_prom_memory(void) |