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Commit ef1a1281 authored by Paul Mackerras's avatar Paul Mackerras
Browse files

ppc64: Simplify secondary CPU startup on powermacs 



... for consistency with ppc32, and because this way is neater.

Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 529294d5

arch/ppc64/kernel/head.S

+11 −14
Original line number Diff line number Diff line
@@ -1556,20 +1556,17 @@ copy_to_here: 
	.section ".text";

	.align 2 ;



	.globl	pmac_secondary_start_1	

pmac_secondary_start_1:	

	.globl	__secondary_start_pmac_0

__secondary_start_pmac_0:

	/* NB the entries for cpus 0, 1, 2 must each occupy 8 bytes. */

	li	r24,0

	b	1f

	li	r24,1

	b	.pmac_secondary_start

	

	.globl pmac_secondary_start_2

pmac_secondary_start_2:	

	b	1f

	li	r24,2

	b	.pmac_secondary_start

	

	.globl pmac_secondary_start_3

pmac_secondary_start_3:

	b	1f

	li	r24,3

	b	.pmac_secondary_start

1:

	

_GLOBAL(pmac_secondary_start)

	/* turn on 64-bit mode */

arch/ppc64/kernel/pmac_smp.c

+4 −17
Original line number Diff line number Diff line
@@ -59,9 +59,7 @@ 
#define DBG(fmt...)

#endif



extern void pmac_secondary_start_1(void);

extern void pmac_secondary_start_2(void);

extern void pmac_secondary_start_3(void);

extern void __secondary_start_pmac_0(void);



extern struct smp_ops_t *smp_ops;
@@ -236,7 +234,7 @@ static int __init smp_core99_probe(void) 


static void __init smp_core99_kick_cpu(int nr)

{

	int save_vector, j;

	unsigned int save_vector, j;

	unsigned long new_vector;

	unsigned long flags;

	volatile unsigned int *vector
@@ -253,20 +251,9 @@ static void __init smp_core99_kick_cpu(int nr) 
	save_vector = *vector;



	/* Setup fake reset vector that does	

	 *   b .pmac_secondary_start - KERNELBASE

	 *   b __secondary_start_pmac_0 + nr*8 - KERNELBASE

	 */

	switch(nr) {

	case 1:

		new_vector = (unsigned long)pmac_secondary_start_1;

		break;

	case 2:

		new_vector = (unsigned long)pmac_secondary_start_2;

		break;			

	case 3:

	default:

		new_vector = (unsigned long)pmac_secondary_start_3;

		break;

	}

	new_vector = (unsigned long) __secondary_start_pmac_0 + nr * 8;

	*vector = 0x48000002 + (new_vector - KERNELBASE);



	/* flush data cache and inval instruction cache */