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powerpc: Move 32-bit probe() machine to later in the boot process

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This converts all the 32-bit platforms to use the expanded device-tree
which is a pretty mechanical change. Unlike 64-bit, the 32-bit kernel
didn't rely on platform initializations to setup the MMU since it
sets it up entirely before probe_machine() so the move has comparatively
less consequences though it's a bigger patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt
2016-07-05 15:04:05 +10:00
committed by Michael Ellerman
parent 406b0b6ae3
commit 5657138404
83 changed files with 120 additions and 289 deletions
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35
arch/powerpc/kernel/setup_32.c
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@@ -113,23 +113,7 @@ notrace void __init machine_init(u64 dt_ptr)
early_init_mmu();
probe_machine();
setup_kdump_trampoline();
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}
/* Checks "l2cr=xxxx" command-line option */
@@ -249,6 +233,21 @@ static void __init exc_lvl_early_init(void)
#define exc_lvl_early_init()
#endif
static void setup_power_save(void)
{
#ifdef CONFIG_6xx
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
}
/* Warning, IO base is not yet inited */
void __init setup_arch(char **cmdline_p)
{
@@ -260,6 +259,10 @@ void __init setup_arch(char **cmdline_p)
unflatten_device_tree();
check_for_initrd();
probe_machine();
setup_power_save();
if (ppc_md.init_early)
ppc_md.init_early();