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| author | Daniel Hellstrom <daniel@gaisler.com> | 2011-04-21 08:20:23 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-04-22 03:44:44 +0400 |
| commit | 5fcafb7a23e35b2f1a5243f4dd536240f52c8ceb (patch) | |
| tree | f3967b2d935e2e492d55ec80d69c3437750cdde0 /arch/sparc/kernel/setup_32.c | |
| parent | 1827237065815373421c087c84d2a779d61c13d3 (diff) | |
| download | linux-5fcafb7a23e35b2f1a5243f4dd536240f52c8ceb.tar.xz | |
sparc32: always define boot_cpu_id
Define boot_cpu_id in single-processor kernels as well. This is
to support architectures which can boot on other than CPU0.
Sam Ravnborg has written the cleanup parts by extracting
boot_cpu_id from smp_32.c into setup_32.c and cleaned up
sun4d_irq.c.
boot_cpu_id was initialized before BSS was cleared in
sun4c_continue_boot, instead boot_cpu_id is set to 0xff to
avoid BSS. If boot_cpu_id is untouched (0xff) by bootup code
it will be overwritten to 0. boot_cpu_id4 is automatically
calculated in common code.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/setup_32.c')
| -rw-r--r-- | arch/sparc/kernel/setup_32.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c index ef8a2ed95161..3609bdee9ed2 100644 --- a/arch/sparc/kernel/setup_32.c +++ b/arch/sparc/kernel/setup_32.c @@ -103,6 +103,10 @@ static unsigned int boot_flags __initdata = 0; /* Exported for mm/init.c:paging_init. */ unsigned long cmdline_memory_size __initdata = 0; +/* which CPU booted us (0xff = not set) */ +unsigned char boot_cpu_id = 0xff; /* 0xff will make it into DATA section... */ +unsigned char boot_cpu_id4; /* boot_cpu_id << 2 */ + static void prom_console_write(struct console *con, const char *s, unsigned n) { |