flush_cache_all() uses 'struct cpuinfo_mips current_cpu_data' data fields.
These data fields are initialized in r4k_cache_init().
However in the current implementation the r4k_cache_init() function
is called __AFTER__ relocate_code().
Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
---
arch/mips/lib/reloc.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/mips/lib/reloc.c b/arch/mips/lib/reloc.c
index 14ba6167dd..6f1cd6d82f 100644
--- a/arch/mips/lib/reloc.c
+++ b/arch/mips/lib/reloc.c
@@ -37,6 +37,7 @@
#include <asm/mipsregs.h>
#include <asm/relocs.h>
#include <asm/sections.h>
+#include <asm/cpu-features.h>
#include <linux/sizes.h>
#include <asm-generic/memory_layout.h>
@@ -157,6 +158,17 @@ void relocate_code(void *fdt, u32 fdt_size, u32 ram_size)
apply_reloc(type, (void *)addr, off);
}
+ /* clear the BSS first */
+ memset(__bss_start, 0x00, bss_len);
+
+ cpu_probe();
+
+ if (cpu_has_4k_cache) {
+ extern void r4k_cache_init(void);
+
+ r4k_cache_init();
+ }
+
/* Ensure the icache is coherent */
flush_cache_all();
--
2.20.1
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