diff options
| author | Jonas Gorski <jogo@openwrt.org> | 2013-06-18 08:34:32 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-07-01 15:10:59 +0200 |
| commit | 7ac836ce2aa7b931f6347e554cb65f9e9cc1da57 (patch) | |
| tree | 13b99f09142adc6265dc5cf69b9574b411926471 /arch/mips | |
| parent | a068dde168e0c618e1dc2151a0922254ec3bbf04 (diff) | |
| download | linux-7ac836ce2aa7b931f6347e554cb65f9e9cc1da57.tar.bz2 | |
MIPS: BCM63xx: Enable second core SMP on BCM6328 if available
BCM6328 has a OTP which tells us if the second core is available.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: John Crispin <blogic@openwrt.org>
Cc: Maxime Bizon <mbizon@freebox.fr>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/5490/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/bcm63xx/prom.c | 6 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h | 2 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 7 |
3 files changed, 14 insertions, 1 deletions
diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c index 3b21454c56a0..8ac4e095e68e 100644 --- a/arch/mips/bcm63xx/prom.c +++ b/arch/mips/bcm63xx/prom.c @@ -69,7 +69,11 @@ void __init prom_init(void) * for now. */ if (BCMCPU_IS_6328()) { - bmips_smp_enabled = 0; + reg = bcm_readl(BCM_6328_OTP_BASE + + OTP_USER_BITS_6328_REG(3)); + + if (reg & OTP_6328_REG3_TP1_DISABLED) + bmips_smp_enabled = 0; } else if (BCMCPU_IS_6358()) { bmips_smp_enabled = 0; } diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h index 9d3c08e4a7e4..22390a2a0661 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h @@ -296,6 +296,8 @@ enum bcm63xx_regs_set { #define BCM_6328_PCMDMAS_BASE (0xdeadbeef) #define BCM_6328_RNG_BASE (0xdeadbeef) #define BCM_6328_MISC_BASE (0xb0001800) +#define BCM_6328_OTP_BASE (0xb0000600) + /* * 6338 register sets base address */ diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h index 654213746b32..018628fe6f15 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h @@ -1477,4 +1477,11 @@ #define PCIE_DEVICE_OFFSET 0x8000 +/************************************************************************* + * _REG relative to RSET_OTP + *************************************************************************/ + +#define OTP_USER_BITS_6328_REG(i) (0x20 + (i) * 4) +#define OTP_6328_REG3_TP1_DISABLED BIT(9) + #endif /* BCM63XX_REGS_H_ */ |