static int show_cpuinfo(struct seq_file *m, void *v)
{
char *str;
int cpu_id = ptr_to_cpu(v);
str = (char *)__get_free_page(GFP_TEMPORARY);
if (!str)
goto done;
seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, "Bogo MIPS : \t%lu.%02lu\n",
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100);
seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE));
#ifdef CONFIG_SMP
seq_printf(m, arc_platform_smp_cpuinfo());
#endif
free_page((unsigned long)str);
done:
seq_printf(m, "\n\n");
return 0;
}
static int show_cpuinfo(struct seq_file *m, void *v)
{
char *str;
int cpu_id = ptr_to_cpu(v);
if (!cpu_online(cpu_id)) {
seq_printf(m, "processor [%d]\t: Offline\n", cpu_id);
goto done;
}
str = (char *)__get_free_page(GFP_TEMPORARY);
if (!str)
goto done;
seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n",
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100);
seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_platform_smp_cpuinfo());
free_page((unsigned long)str);
done:
seq_printf(m, "\n");
return 0;
}
void arc_mmu_init(void)
{
char str[256];
struct cpuinfo_arc_mmu *mmu = &cpuinfo_arc700[smp_processor_id()].mmu;
printk(arc_mmu_mumbojumbo(0, str, sizeof(str)));
/* For efficiency sake, kernel is compile time built for a MMU ver
* This must match the hardware it is running on.
* Linux built for MMU V2, if run on MMU V1 will break down because V1
* hardware doesn't understand cmds such as WriteNI, or IVUTLB
* On the other hand, Linux built for V1 if run on MMU V2 will do
* un-needed workarounds to prevent memcpy thrashing.
* Similarly MMU V3 has new features which won't work on older MMU
*/
if (mmu->ver != CONFIG_ARC_MMU_VER) {
panic("MMU ver %d doesn't match kernel built for %d...\n",
mmu->ver, CONFIG_ARC_MMU_VER);
}
if (mmu->pg_sz != PAGE_SIZE)
panic("MMU pg size != PAGE_SIZE (%luk)\n", TO_KB(PAGE_SIZE));
/* Enable the MMU */
write_aux_reg(ARC_REG_PID, MMU_ENABLE);
/* In smp we use this reg for interrupt 1 scratch */
#ifndef CONFIG_SMP
/* swapper_pg_dir is the pgd for the kernel, used by vmalloc */
write_aux_reg(ARC_REG_SCRATCH_DATA0, swapper_pg_dir);
#endif
}
static int show_cpuinfo(struct seq_file *m, void *v)
{
char *str;
int cpu_id = ptr_to_cpu(v);
struct device *cpu_dev = get_cpu_device(cpu_id);
struct clk *cpu_clk;
unsigned long freq = 0;
if (!cpu_online(cpu_id)) {
seq_printf(m, "processor [%d]\t: Offline\n", cpu_id);
goto done;
}
str = (char *)__get_free_page(GFP_KERNEL);
if (!str)
goto done;
seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE));
cpu_clk = clk_get(cpu_dev, NULL);
if (IS_ERR(cpu_clk)) {
seq_printf(m, "CPU speed \t: Cannot get clock for processor [%d]\n",
cpu_id);
} else {
freq = clk_get_rate(cpu_clk);
}
if (freq)
seq_printf(m, "CPU speed\t: %lu.%02lu Mhz\n",
freq / 1000000, (freq / 10000) % 100);
seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n",
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100);
seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_platform_smp_cpuinfo());
free_page((unsigned long)str);
done:
seq_printf(m, "\n");
return 0;
}
static int show_cpuinfo(struct seq_file *m, void *v)
{
char *str;
int cpu_id = ptr_to_cpu(v);
struct device_node *core_clk = of_find_node_by_name(NULL, "core_clk");
u32 freq = 0;
if (!cpu_online(cpu_id)) {
seq_printf(m, "processor [%d]\t: Offline\n", cpu_id);
goto done;
}
str = (char *)__get_free_page(GFP_TEMPORARY);
if (!str)
goto done;
seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE));
of_property_read_u32(core_clk, "clock-frequency", &freq);
if (freq)
seq_printf(m, "CPU speed\t: %u.%02u Mhz\n",
freq / 1000000, (freq / 10000) % 100);
seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n",
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100);
seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE));
seq_printf(m, arc_platform_smp_cpuinfo());
free_page((unsigned long)str);
done:
seq_printf(m, "\n");
return 0;
}
