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| author | Mike Frysinger <vapier@gentoo.org> | 2008-10-11 21:44:00 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-01-28 13:26:15 -0500 |
| commit | b1e9435b643043dd8fbd1fcc47309c6acb7b3c8e (patch) | |
| tree | b21c55b7e58b3460c6027c04bccc2b7d6ea62443 /cpu/blackfin/cpu.c | |
| parent | b5eba3fafcccd1979380f12a256bd0e19be3d61e (diff) | |
| download | u-boot-imx-b1e9435b643043dd8fbd1fcc47309c6acb7b3c8e.zip u-boot-imx-b1e9435b643043dd8fbd1fcc47309c6acb7b3c8e.tar.gz u-boot-imx-b1e9435b643043dd8fbd1fcc47309c6acb7b3c8e.tar.bz2 | |
Blackfin: pass RETX to Linux
Make sure we save the value of RETX at power on and then pass it on to the
kernel so that it can nicely debug a "double-fault-caused-a-reset" crash.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu/blackfin/cpu.c')
| -rw-r--r-- | cpu/blackfin/cpu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/cpu/blackfin/cpu.c b/cpu/blackfin/cpu.c index 9efd88e..30c214b 100644 --- a/cpu/blackfin/cpu.c +++ b/cpu/blackfin/cpu.c @@ -14,11 +14,14 @@ #include <asm/blackfin.h> #include <asm/cplb.h> #include <asm/mach-common/bits/core.h> +#include <asm/mach-common/bits/ebiu.h> #include <asm/mach-common/bits/trace.h> #include "cpu.h" #include "serial.h" +ulong bfin_poweron_retx; + __attribute__ ((__noreturn__)) void cpu_init_f(ulong bootflag, ulong loaded_from_ldr) { @@ -48,6 +51,9 @@ void cpu_init_f(ulong bootflag, ulong loaded_from_ldr) bfin_write_EBIU_AMGCTL(CONFIG_EBIU_AMGCTL_VAL); #endif + /* Save RETX so we can pass it while booting Linux */ + bfin_poweron_retx = bootflag; + #ifdef CONFIG_DEBUG_DUMP /* Turn on hardware trace buffer */ bfin_write_TBUFCTL(TBUFPWR | TBUFEN); |