On Sat, Nov 06, 2021 at 08:49:11AM -0700, Randy Dunlap wrote:
> Several header files need info on CONFIG_32BIT or CONFIG_64BIT,
> but kconfig symbol BCM63XX does not provide that info. This leads
> to many build errors, e.g.:
>
> arch/mips/include/asm/page.h:196:13: error: use of undeclared identifier 'CAC_BASE'
> return x - PAGE_OFFSET + PHYS_OFFSET;
> arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET'
> #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)
> arch/mips/include/asm/io.h:134:28: error: use of undeclared identifier 'CAC_BASE'
> return (void *)(address + PAGE_OFFSET - PHYS_OFFSET);
> arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET'
> #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)
>
> arch/mips/include/asm/uaccess.h:82:10: error: use of undeclared identifier '__UA_LIMIT'
> return (__UA_LIMIT & (addr | (addr + size) | __ua_size(size))) == 0;
>
>
> Selecting the SYS_HAS_CPU_BMIPS* symbols causes SYS_HAS_CPU_BMIPS to be
> set, which then selects CPU_SUPPORT_32BIT_KERNEL, which causes
> CONFIG_32BIT to be set. (a bit more indirect than v1 [RFC].)
>
> Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.")
> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
> Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx
> Cc: linux-mips@xxxxxxxxxxxxxxx
> Cc: Paul Burton <paulburton@xxxxxxxxxx>
> Cc: Maxime Bizon <mbizon@xxxxxxxxxx>
> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> Suggested-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> ---
> v2: select 3 SYS_HAS_CPU_BMIPS* symbols that will cause
> CPU_SUPPORTS_32BIT_KERNEL to be set (Florian)
>
> arch/mips/Kconfig | 3 +++
> 1 file changed, 3 insertions(+)
>
> --- linux-next-20211105.orig/arch/mips/Kconfig
> +++ linux-next-20211105/arch/mips/Kconfig
> @@ -332,6 +332,9 @@ config BCM63XX
> select SYS_SUPPORTS_32BIT_KERNEL
> select SYS_SUPPORTS_BIG_ENDIAN
> select SYS_HAS_EARLY_PRINTK
> + select SYS_HAS_CPU_BMIPS32_3300
> + select SYS_HAS_CPU_BMIPS4350
> + select SYS_HAS_CPU_BMIPS4380
> select SWAP_IO_SPACE
> select GPIOLIB
> select MIPS_L1_CACHE_SHIFT_4
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
