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authorJayachandran C <jchandra@broadcom.com>2013-08-11 14:43:54 +0530
committerRalf Baechle <ralf@linux-mips.org>2013-09-03 23:22:19 +0200
commit4ca86a2ff37ce92b6875a184a97a20188704cb6c (patch)
treebb9b5608a7031cd64a5f24dfcd1abdebaf44507e /arch/mips/include/asm
parent13314a91f0588546023570cfc9a1cf4ca5027c75 (diff)
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MIPS: Netlogic: Add support for XLP2XX
XLP2XX is first in the series of 28nm XLPII processors. The changes are to: * Add processor ID for XLP2XX to asm/cpu.h and kernel/cpu-probe.c. * Add a cpu_is_xlpii() function to check for XLPII processors. * Update xlp_mmu_init() to use config4 to enable extended TLB. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5698/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm')
-rw-r--r--arch/mips/include/asm/cpu.h1
-rw-r--r--arch/mips/include/asm/netlogic/xlp-hal/xlp.h7
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index c19861518c32..71b9f1998be7 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -179,6 +179,7 @@
#define PRID_IMP_NETLOGIC_XLP8XX 0x1000
#define PRID_IMP_NETLOGIC_XLP3XX 0x1100
+#define PRID_IMP_NETLOGIC_XLP2XX 0x1200
/*
* Definitions for 7:0 on legacy processors
diff --git a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
index d59cdd69496b..7a4a5142bbc5 100644
--- a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
+++ b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
@@ -64,5 +64,12 @@ int xlp_get_dram_map(int n, uint64_t *dram_map);
/* Device tree related */
void *xlp_dt_init(void *fdtp);
+static inline int cpu_is_xlpii(void)
+{
+ int chip = read_c0_prid() & 0xff00;
+
+ return chip == PRID_IMP_NETLOGIC_XLP2XX;
+}
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_NLM_XLP_H */
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