BCM6358 has a shared TLB which conflicts with current SMP support, so it must be disabled for now. BCM6358 uses >= 0xfffe0000 addresses for internal registers, which need to be remapped (by using a simplified version of BRCM63xx ioremap.h). Signed-off-by: Álvaro Fernández Rojas <noltari@xxxxxxxxx> --- v2: Use a different approach for remapping internal registers arch/mips/bmips/setup.c | 29 +++++++++++++++++------ arch/mips/include/asm/mach-bmips/ioremap.h | 37 ++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+), 7 deletions(-) create mode 100644 arch/mips/include/asm/mach-bmips/ioremap.h diff --git a/arch/mips/bmips/setup.c b/arch/mips/bmips/setup.c index 3553528..f834a86 100644 --- a/arch/mips/bmips/setup.c +++ b/arch/mips/bmips/setup.c @@ -18,6 +18,7 @@ #include <linux/of_fdt.h> #include <linux/of_platform.h> #include <linux/smp.h> +#include <linux/types.h> #include <asm/addrspace.h> #include <asm/bmips.h> #include <asm/bootinfo.h> @@ -35,9 +36,12 @@ static const unsigned long kbase = VMLINUX_LOAD_ADDRESS & 0xfff00000; +phys_addr_t bmips_internal_registers; + struct bmips_quirk { - const char *compatible; - void (*quirk_fn)(void); + const char *compatible; + void (*quirk_fn)(void); + const phys_addr_t regs; }; static void kbase_setup(void) @@ -95,17 +99,27 @@ static void bcm6328_quirks(void) bcm63xx_fixup_cpu1(); } +static void bcm6358_quirks(void) +{ + /* + * BCM6358 needs special handling for its shared TLB, so + * disable SMP for now + */ + bmips_smp_enabled = 0; +} + static void bcm6368_quirks(void) { bcm63xx_fixup_cpu1(); } static const struct bmips_quirk bmips_quirk_list[] = { - { "brcm,bcm3384-viper", &bcm3384_viper_quirks }, - { "brcm,bcm33843-viper", &bcm3384_viper_quirks }, - { "brcm,bcm6328", &bcm6328_quirks }, - { "brcm,bcm6368", &bcm6368_quirks }, - { "brcm,bcm63168", &bcm6368_quirks }, + { "brcm,bcm3384-viper", &bcm3384_viper_quirks, 0 }, + { "brcm,bcm33843-viper", &bcm3384_viper_quirks, 0 }, + { "brcm,bcm6328", &bcm6328_quirks, 0 }, + { "brcm,bcm6358", &bcm6358_quirks, 0xfffe0000 }, + { "brcm,bcm6368", &bcm6368_quirks, 0 }, + { "brcm,bcm63168", &bcm6368_quirks, 0 }, { }, }; @@ -162,6 +176,7 @@ void __init plat_mem_setup(void) for (q = bmips_quirk_list; q->quirk_fn; q++) { if (of_flat_dt_is_compatible(of_get_flat_dt_root(), q->compatible)) { + bmips_internal_registers = q->regs; q->quirk_fn(); } } diff --git a/arch/mips/include/asm/mach-bmips/ioremap.h b/arch/mips/include/asm/mach-bmips/ioremap.h new file mode 100644 index 0000000..5ffca94 --- /dev/null +++ b/arch/mips/include/asm/mach-bmips/ioremap.h @@ -0,0 +1,37 @@ +#ifndef __ASM_MACH_BMIPS_IOREMAP_H +#define __ASM_MACH_BMIPS_IOREMAP_H + +#include <linux/types.h> + +extern phys_addr_t bmips_internal_registers; + +static inline phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, + phys_addr_t size) +{ + return phys_addr; +} + +static inline int is_bmips_internal_registers(phys_addr_t offset) +{ + if (bmips_internal_registers != 0 && offset >= bmips_internal_registers) + return 1; + else + return 0; +} + +static inline void __iomem *plat_ioremap(phys_addr_t offset, + unsigned long size, + unsigned long flags) +{ + if (is_bmips_internal_registers(offset)) + return (void __iomem *) offset; + + return NULL; +} + +static inline int plat_iounmap(const volatile void __iomem *addr) +{ + return is_bmips_internal_registers((unsigned long) addr); +} + +#endif /* __ASM_MACH_BMIPS_IOREMAP_H */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html