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MIPS: BCM63xx: Enable second core SMP on BCM6328 if available

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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>
This commit is contained in:
Jonas Gorski 2013-06-18 08:34:32 +00:00 • committed by Ralf Baechle
parent a068dde168
commit 7ac836ce2a
3 changed files with 14 additions and 1 deletions
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6
arch/mips/bcm63xx/prom.c
View file

@ -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;
}

2
arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
View file

@ -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
*/

7
arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
View file

@ -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_ */