diff options
Diffstat (limited to 'arch/sh/boards/saturn/smp.c')
-rw-r--r-- | arch/sh/boards/saturn/smp.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/arch/sh/boards/saturn/smp.c b/arch/sh/boards/saturn/smp.c deleted file mode 100644 index 76460918c9cd..000000000000 --- a/arch/sh/boards/saturn/smp.c +++ /dev/null | |||
@@ -1,68 +0,0 @@ | |||
1 | /* | ||
2 | * arch/sh/boards/saturn/smp.c | ||
3 | * | ||
4 | * SMP support for the Sega Saturn. | ||
5 | * | ||
6 | * Copyright (c) 2002 Paul Mundt | ||
7 | * | ||
8 | * Released under the terms of the GNU GPL v2.0. | ||
9 | */ | ||
10 | #include <linux/kernel.h> | ||
11 | #include <linux/init.h> | ||
12 | #include <linux/smp.h> | ||
13 | |||
14 | #include <asm/saturn/smpc.h> | ||
15 | |||
16 | extern void start_secondary(void); | ||
17 | |||
18 | void __smp_send_ipi(unsigned int cpu, unsigned int action) | ||
19 | { | ||
20 | /* Nothing here yet .. */ | ||
21 | } | ||
22 | |||
23 | unsigned int __smp_probe_cpus(void) | ||
24 | { | ||
25 | /* | ||
26 | * This is just a straightforward master/slave configuration, | ||
27 | * and probing isn't really supported.. | ||
28 | */ | ||
29 | return 2; | ||
30 | } | ||
31 | |||
32 | /* | ||
33 | * We're only allowed to do byte-access to SMPC registers. In | ||
34 | * addition to which, we treat them as write-only, since | ||
35 | * reading from them will return undefined data. | ||
36 | */ | ||
37 | static inline void smpc_slave_stop(unsigned int cpu) | ||
38 | { | ||
39 | smpc_barrier(); | ||
40 | ctrl_outb(1, SMPC_STATUS); | ||
41 | |||
42 | ctrl_outb(SMPC_CMD_SSHOFF, SMPC_COMMAND); | ||
43 | smpc_barrier(); | ||
44 | } | ||
45 | |||
46 | static inline void smpc_slave_start(unsigned int cpu) | ||
47 | { | ||
48 | ctrl_outb(1, SMPC_STATUS); | ||
49 | ctrl_outb(SMPC_CMD_SSHON, SMPC_COMMAND); | ||
50 | |||
51 | smpc_barrier(); | ||
52 | } | ||
53 | |||
54 | void __smp_slave_init(unsigned int cpu) | ||
55 | { | ||
56 | register unsigned long vbr; | ||
57 | void **entry; | ||
58 | |||
59 | __asm__ __volatile__ ("stc vbr, %0\n\t" : "=r" (vbr)); | ||
60 | entry = (void **)(vbr + 0x310 + 0x94); | ||
61 | |||
62 | smpc_slave_stop(cpu); | ||
63 | |||
64 | *(void **)entry = (void *)start_secondary; | ||
65 | |||
66 | smpc_slave_start(cpu); | ||
67 | } | ||
68 | |||