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MN10300: And Panasonic AM34 subarch and implement SMP

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Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for
MN10300.  Also implement support for the MN2WS0060 processor and the ASB2364
evaluation board which are AM34 based.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Akira Takeuchi
2010-10-27 17:28:55 +01:00
committed by David Howells
parent 04157a6e7d
commit 368dd5acd1
80 changed files with 4500 additions and 487 deletions
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79
arch/mn10300/kernel/setup.c
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@@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <asm/processor.h>
#include <linux/console.h>
#include <asm/uaccess.h>
@@ -30,7 +31,6 @@
#include <asm/io.h>
#include <asm/smp.h>
#include <proc/proc.h>
#include <asm/busctl-regs.h>
#include <asm/fpu.h>
#include <asm/sections.h>
@@ -64,11 +64,13 @@ unsigned long memory_size;
struct thread_info *__current_ti = &init_thread_union.thread_info;
struct task_struct *__current = &init_task;
#define mn10300_known_cpus 3
#define mn10300_known_cpus 5
static const char *const mn10300_cputypes[] = {
"am33v1",
"am33v2",
"am34v1",
"am33-1",
"am33-2",
"am34-1",
"am33-3",
"am34-2",
"unknown"
};
@@ -123,6 +125,7 @@ void __init setup_arch(char **cmdline_p)
cpu_init();
unit_setup();
smp_init_cpus();
parse_mem_cmdline(cmdline_p);
init_mm.start_code = (unsigned long)&_text;
@@ -179,7 +182,6 @@ void __init setup_arch(char **cmdline_p)
void __init cpu_init(void)
{
unsigned long cpurev = CPUREV, type;
unsigned long base, size;
type = (CPUREV & CPUREV_TYPE) >> CPUREV_TYPE_S;
if (type > mn10300_known_cpus)
@@ -189,47 +191,46 @@ void __init cpu_init(void)
mn10300_cputypes[type],
(cpurev & CPUREV_REVISION) >> CPUREV_REVISION_S);
/* determine the memory size and base from the memory controller regs */
memory_size = 0;
base = SDBASE(0);
if (base & SDBASE_CE) {
size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
size = ~size + 1;
base &= SDBASE_CBA;
printk(KERN_INFO "SDRAM[0]: %luMb @%08lx\n", size >> 20, base);
memory_size += size;
phys_memory_base = base;
}
base = SDBASE(1);
if (base & SDBASE_CE) {
size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
size = ~size + 1;
base &= SDBASE_CBA;
printk(KERN_INFO "SDRAM[1]: %luMb @%08lx\n", size >> 20, base);
memory_size += size;
if (phys_memory_base == 0)
phys_memory_base = base;
}
get_mem_info(&phys_memory_base, &memory_size);
phys_memory_end = phys_memory_base + memory_size;
#ifdef CONFIG_FPU
fpu_init_state();
#endif
}
static struct cpu cpu_devices[NR_CPUS];
static int __init topology_init(void)
{
int i;
for_each_present_cpu(i)
register_cpu(&cpu_devices[i], i);
return 0;
}
subsys_initcall(topology_init);
/*
* Get CPU information for use by the procfs.
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
#ifdef CONFIG_SMP
struct mn10300_cpuinfo *c = v;
unsigned long cpu_id = c - cpu_data;
unsigned long cpurev = c->type, type, icachesz, dcachesz;
#else /* CONFIG_SMP */
unsigned long cpu_id = 0;
unsigned long cpurev = CPUREV, type, icachesz, dcachesz;
#endif /* CONFIG_SMP */
type = (CPUREV & CPUREV_TYPE) >> CPUREV_TYPE_S;
#ifdef CONFIG_SMP
if (!cpu_online(cpu_id))
return 0;
#endif
type = (cpurev & CPUREV_TYPE) >> CPUREV_TYPE_S;
if (type > mn10300_known_cpus)
type = mn10300_known_cpus;
@@ -244,13 +245,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
1024;
seq_printf(m,
"processor : 0\n"
"processor : %ld\n"
"vendor_id : Matsushita\n"
"cpu core : %s\n"
"cpu rev : %lu\n"
"model name : " PROCESSOR_MODEL_NAME "\n"
"icache size: %lu\n"
"dcache size: %lu\n",
cpu_id,
mn10300_cputypes[type],
(cpurev & CPUREV_REVISION) >> CPUREV_REVISION_S,
icachesz,
@@ -262,8 +264,13 @@ static int show_cpuinfo(struct seq_file *m, void *v)
"bogomips : %lu.%02lu\n\n",
MN10300_IOCLK / 1000000,
(MN10300_IOCLK / 10000) % 100,
#ifdef CONFIG_SMP
c->loops_per_jiffy / (500000 / HZ),
(c->loops_per_jiffy / (5000 / HZ)) % 100
#else /* CONFIG_SMP */
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100
#endif /* CONFIG_SMP */
);
return 0;