From: Vladimir Kondratiev <vladimir.kondratiev@xxxxxxxxx>
Support platforms where RAM is mapped beyond 32-bit.
The kernel parameter ddr32_alias allows to setup the alias to point
outside the first 4 GB of memory.
Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@xxxxxxxxx>
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx>
---
arch/mips/kernel/smp-cps.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 47e76722a306..fcfb19487612 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -34,6 +34,16 @@ static unsigned __init core_vpe_count(unsigned int cluster, unsigned core)
return min(smp_max_threads, mips_cps_numvps(cluster, core));
}
+static int ddr32_alias;
+
+static int __init ddr32_alias_setup(char *str)
+{
+ get_option(&str, &ddr32_alias);
+
+ return 0;
+}
+early_param("ddr32_alias", ddr32_alias_setup);
+
/**
* plat_core_entry - query reset vector for NMI/reset
*
@@ -52,7 +62,7 @@ static u32 plat_core_entry(void)
{
#if defined(CONFIG_USE_XKPHYS)
return (UNCAC_ADDR(mips_cps_core_entry) & 0xffffffff)
- | CM_GCR_Cx_RESET_BASE_MODE;
+ | ddr32_alias | CM_GCR_Cx_RESET_BASE_MODE;
#else
return CKSEG1ADDR((unsigned long)mips_cps_core_entry);
#endif
--
2.40.1
