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[MIPS] Add support for BCM47XX CPUs.

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Note that the BCM4710 does not support the wait instruction, this
is not a mistake in the code.
    
It originally comes from the OpenWrt patches.
    
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Florian Schirmer <jolt@tuxbox.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Aurelien Jarno
2007-09-25 15:40:12 +02:00
committed by Ralf Baechle
parent ea202c632a
commit 1c0c13eb93
14 changed files with 385 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
arch/mips/kernel/cpu-probe.c
View File

@@ -159,6 +159,7 @@ static inline void check_wait(void)
case CPU_5KC:
case CPU_25KF:
case CPU_PR4450:
case CPU_BCM3302:
cpu_wait = r4k_wait;
break;
@@ -793,6 +794,22 @@ static inline void cpu_probe_philips(struct cpuinfo_mips *c)
}
static inline void cpu_probe_broadcom(struct cpuinfo_mips *c)
{
decode_configs(c);
switch (c->processor_id & 0xff00) {
case PRID_IMP_BCM3302:
c->cputype = CPU_BCM3302;
break;
case PRID_IMP_BCM4710:
c->cputype = CPU_BCM4710;
break;
default:
c->cputype = CPU_UNKNOWN;
break;
}
}
__init void cpu_probe(void)
{
struct cpuinfo_mips *c = &current_cpu_data;
@@ -815,6 +832,9 @@ __init void cpu_probe(void)
case PRID_COMP_SIBYTE:
cpu_probe_sibyte(c);
break;
case PRID_COMP_BROADCOM:
cpu_probe_broadcom(c);
break;
case PRID_COMP_SANDCRAFT:
cpu_probe_sandcraft(c);
break;

2
arch/mips/kernel/proc.c
View File

@@ -82,6 +82,8 @@ static const char *cpu_name[] = {
[CPU_VR4181] = "NEC VR4181",
[CPU_VR4181A] = "NEC VR4181A",
[CPU_SR71000] = "Sandcraft SR71000",
[CPU_BCM3302] = "Broadcom BCM3302",
[CPU_BCM4710] = "Broadcom BCM4710",
[CPU_PR4450] = "Philips PR4450",
[CPU_LOONGSON2] = "ICT Loongson-2",
};