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authorVineet Gupta <vgupta@synopsys.com>2018-12-06 11:17:50 +0300
committerVineet Gupta <vgupta@synopsys.com>2019-01-18 01:38:00 +0300
commit97e981324d492340e33baa9680780046377b561f (patch)
tree27bec4ddfc78c4a6957813aacbca260b4c357707 /arch/arc
parentbfeffd155283772bbe78c6a05dec7c0128ee500c (diff)
downloadlinux-97e981324d492340e33baa9680780046377b561f.tar.xz
ARCv2: boot log: BPU return stack depth
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/include/asm/arcregs.h2
-rw-r--r--arch/arc/kernel/setup.c5
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 49bfbd879caa..9f10d32ee1bd 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -283,7 +283,7 @@ struct cpuinfo_arc_cache {
};
struct cpuinfo_arc_bpu {
- unsigned int ver, full, num_cache, num_pred;
+ unsigned int ver, full, num_cache, num_pred, ret_stk;
};
struct cpuinfo_arc_ccm {
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 2e018b8c2e19..33e232145d83 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -195,6 +195,7 @@ static void read_arc_build_cfg_regs(void)
cpu->bpu.full = bpu.ft;
cpu->bpu.num_cache = 256 << bpu.bce;
cpu->bpu.num_pred = 2048 << bpu.pte;
+ cpu->bpu.ret_stk = 4 << bpu.rse;
if (cpu->core.family >= 0x54) {
unsigned int exec_ctrl;
@@ -299,10 +300,10 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
if (cpu->bpu.ver)
n += scnprintf(buf + n, len - n,
- "BPU\t\t: %s%s match, cache:%d, Predict Table:%d",
+ "BPU\t\t: %s%s match, cache:%d, Predict Table:%d Return stk: %d",
IS_AVAIL1(cpu->bpu.full, "full"),
IS_AVAIL1(!cpu->bpu.full, "partial"),
- cpu->bpu.num_cache, cpu->bpu.num_pred);
+ cpu->bpu.num_cache, cpu->bpu.num_pred, cpu->bpu.ret_stk);
if (is_isa_arcv2()) {
struct bcr_lpb lpb;