36197755dc
This breaks some devices where the serial console is not at port 0 but somewhere else. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 39060
53 lines
1.6 KiB
Diff
53 lines
1.6 KiB
Diff
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)
|