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MIPS: BMIPS: Add BCM6358 support

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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 <noltari@gmail.com>
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 <ralf@linux-mips.org>
This commit is contained in:
Álvaro Fernández Rojas 2016-04-09 12:56:47 +02:00 committed by Ralf Baechle
parent 65b2849a02
commit 3604b4510c
2 changed files with 43 additions and 0 deletions
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10
arch/mips/bmips/setup.c
View File

@ -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 },
{ },

33
arch/mips/include/asm/mach-bmips/ioremap.h Normal file
View File

@ -0,0 +1,33 @@
#ifndef __ASM_MACH_BMIPS_IOREMAP_H
#define __ASM_MACH_BMIPS_IOREMAP_H
#include <linux/types.h>
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 */