diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-07-05 05:03:45 (GMT) |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-07-11 10:09:39 (GMT) |
| commit | bd7c93cca36911baf2eb2bc386956612af3b842d (patch) | |
| tree | 756b575a753fc45bef7727133dd5cdd188d80722 /arch/powerpc/kernel/setup_32.c | |
| parent | 3b3dcd61fa4e3604d8f1bdfd8471fca7b7c012e4 (diff) | |
| download | linux-bd7c93cca36911baf2eb2bc386956612af3b842d.tar.xz | |
powerpc: Update obsolete comments in setup_32.c about entry conditions
early_init() is called in-place before kernel relocation and using
whatever MMU setup exists at the point the kernel is entered.
machine_init() is called after relocation and after some initial
mapping of PAGE_OFFSET has been established (typically using BATs
on 6xx/7xx/7xxx processors or some form of bolted TLB on others).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/setup_32.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index d544fa3..2fc27ac 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -62,9 +62,7 @@ int icache_bsize; int ucache_bsize; /* - * We're called here very early in the boot. We determine the machine - * type and call the appropriate low-level setup functions. - * -- Cort <cort@fsmlabs.com> + * We're called here very early in the boot. * * Note that the kernel may be running at an address which is different * from the address that it was linked at, so we must use RELOC/PTRRELOC @@ -105,6 +103,10 @@ notrace unsigned long __init early_init(unsigned long dt_ptr) /* + * This is run before start_kernel(), the kernel has been relocated + * and we are running with enough of the MMU enabled to have our + * proper kernel virtual addresses + * * Find out what kind of machine we're on and save any data we need * from the early boot process (devtree is copied on pmac by prom_init()). * This is called very early on the boot process, after a minimal |