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Commit bd7c93cc authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Michael Ellerman
Browse files

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: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 3b3dcd61

arch/powerpc/kernel/setup_32.c

+5 −3
Original line number Diff line number Diff line
@@ -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