From: Álvaro Fernández Rojas Date: Sat, 9 Apr 2016 10:56:47 +0000 (+0200) Subject: MIPS: BMIPS: Add BCM6358 support X-Git-Tag: v5.15~13483^2~163 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3604b4510c17c16271b3446528807227dfb02b04;p=platform%2Fkernel%2Flinux-starfive.git MIPS: BMIPS: Add BCM6358 support 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). However, 0xfff80000 is a better address, since it also covers BCM3368, leaving the possibility to add it in the future. Signed-off-by: Álvaro Fernández Rojas Cc: f.fainelli@gmail.com Cc: jogo@openwrt.org Cc: cernekee@gmail.com Cc: robh@kernel.org Cc: simon@fire.lp0.eu Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/13040/ Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/bmips/setup.c b/arch/mips/bmips/setup.c index b764995..c63bc0a 100644 --- a/arch/mips/bmips/setup.c +++ b/arch/mips/bmips/setup.c @@ -95,6 +95,15 @@ 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(); @@ -104,6 +113,7 @@ 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,bcm6358", &bcm6358_quirks }, { "brcm,bcm6368", &bcm6368_quirks }, { "brcm,bcm63168", &bcm6368_quirks }, { }, 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..29c7a7b --- /dev/null +++ b/arch/mips/include/asm/mach-bmips/ioremap.h @@ -0,0 +1,33 @@ +#ifndef __ASM_MACH_BMIPS_IOREMAP_H +#define __ASM_MACH_BMIPS_IOREMAP_H + +#include + +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 (offset >= 0xfff80000) + return 1; + + 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 */