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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2006-03-28 23:15:54 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-03-28 23:15:54 +1100 |
| commit | e8222502ee6157e2713da9e0792c21f4ad458d50 (patch) | |
| tree | 0f970fb99912c257a7e5254f863a53f79d22ab14 /include/asm-powerpc/machdep.h | |
| parent | 056cb48a2fb6fb31debf665695a9f97b45cfb8ec (diff) | |
| download | op-kernel-dev-e8222502ee6157e2713da9e0792c21f4ad458d50.zip op-kernel-dev-e8222502ee6157e2713da9e0792c21f4ad458d50.tar.gz | |
[PATCH] powerpc: Kill _machine and hard-coded platform numbers
This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism. With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.
We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants. This commit also
changes various drivers to use the new macro instead of looking at
_machine.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/machdep.h')
| -rw-r--r-- | include/asm-powerpc/machdep.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h index 758e47f..5ed8476 100644 --- a/include/asm-powerpc/machdep.h +++ b/include/asm-powerpc/machdep.h @@ -47,6 +47,7 @@ struct smp_ops_t { #endif struct machdep_calls { + char *name; #ifdef CONFIG_PPC64 void (*hpte_invalidate)(unsigned long slot, unsigned long va, @@ -85,9 +86,9 @@ struct machdep_calls { void (*iommu_dev_setup)(struct pci_dev *dev); void (*iommu_bus_setup)(struct pci_bus *bus); void (*irq_bus_setup)(struct pci_bus *bus); -#endif +#endif /* CONFIG_PPC64 */ - int (*probe)(int platform); + int (*probe)(void); void (*setup_arch)(void); void (*init_early)(void); /* Optional, may be NULL. */ @@ -207,8 +208,6 @@ struct machdep_calls { /* Called at then very end of pcibios_init() */ void (*pcibios_after_init)(void); - /* this is for modules, since _machine can be a define -- Cort */ - int ppc_machine; #endif /* CONFIG_PPC32 */ /* Called to shutdown machine specific hardware not already controlled @@ -244,7 +243,26 @@ struct machdep_calls { extern void power4_idle(void); extern void ppc6xx_idle(void); +/* + * ppc_md contains a copy of the machine description structure for the + * current platform. machine_id contains the initial address where the + * description was found during boot. + */ extern struct machdep_calls ppc_md; +extern struct machdep_calls *machine_id; + +#define __machine_desc __attribute__ ((__section__ (".machine.desc"))) + +#define define_machine(name) struct machdep_calls mach_##name __machine_desc = +#define machine_is(name) \ + ({ \ + extern struct machdep_calls mach_##name \ + __attribute__((weak)); \ + machine_id == &mach_##name; \ + }) + +extern void probe_machine(void); + extern char cmd_line[COMMAND_LINE_SIZE]; #ifdef CONFIG_PPC_PMAC |
