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