Messages in this thread Patch in this message | | | From | Cyril Chemparathy <> | Subject | [RFC 17/23] ARM: add machine desc hook for early memory/paging initialization | Date | Mon, 23 Jul 2012 21:09:19 -0400 |
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This patch adds a machine descriptor hook that gives control to machine specific code prior to memory and paging initialization.
On Keystone platforms, this hook is used to switch the PHYS_OFFSET over to the "real" non-32-bit-addressable address range.
Signed-off-by: Cyril Chemparathy <cyril@ti.com> Signed-off-by: Vitaly Andrianov <vitalya@ti.com> --- arch/arm/include/asm/mach/arch.h | 1 + arch/arm/kernel/setup.c | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h index 0b1c94b..49e9c2a 100644 --- a/arch/arm/include/asm/mach/arch.h +++ b/arch/arm/include/asm/mach/arch.h @@ -39,6 +39,7 @@ struct machine_desc { struct meminfo *); void (*reserve)(void);/* reserve mem blocks */ void (*map_io)(void);/* IO mapping function */ + void (*init_meminfo)(void); void (*init_early)(void); void (*init_irq)(void); struct sys_timer *timer; /* system tick timer */ diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index e15d83b..7cbe292 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -964,6 +964,9 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); + if (mdesc->init_meminfo) + mdesc->init_meminfo(); + sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL); sanity_check_meminfo(); arm_memblock_init(&meminfo, mdesc); -- 1.7.9.5
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