mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-28 23:32:50 +02:00
4ac203ac44
The device is booting and Ethernet is working, but nothing more was tested. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18589 3c298f89-4303-0410-b956-a3cf2f4a3e73
94 lines
2.5 KiB
Diff
94 lines
2.5 KiB
Diff
--- a/arch/mips/amazon/setup.c
|
|
+++ b/arch/mips/amazon/setup.c
|
|
@@ -36,6 +36,12 @@
|
|
#include <asm/amazon/irq.h>
|
|
#include <asm/amazon/model.h>
|
|
|
|
+static unsigned int r4k_offset;
|
|
+static unsigned int r4k_cur;
|
|
+
|
|
+/* required in arch/mips/kernel/kspd.c */
|
|
+unsigned long cpu_khz;
|
|
+
|
|
extern void prom_printf(const char * fmt, ...);
|
|
static void amazon_reboot_setup(void);
|
|
|
|
@@ -91,35 +97,32 @@ unsigned int amazon_get_cpu_ver(void)
|
|
return cpu_ver;
|
|
}
|
|
|
|
-void amazon_time_init(void)
|
|
+static inline u32 amazon_get_counter_resolution(void)
|
|
{
|
|
- mips_hpt_frequency = amazon_get_cpu_hz()/2;
|
|
- printk("mips_hpt_frequency:%d\n", mips_hpt_frequency);
|
|
+ u32 res;
|
|
+ __asm__ __volatile__(
|
|
+ ".set push\n"
|
|
+ ".set mips32r2\n"
|
|
+ ".set noreorder\n"
|
|
+ "rdhwr %0, $3\n"
|
|
+ "ehb\n"
|
|
+ ".set pop\n"
|
|
+ : "=&r" (res)
|
|
+ : /* no input */
|
|
+ : "memory");
|
|
+ instruction_hazard();
|
|
+ return res;
|
|
}
|
|
|
|
-extern int hr_time_resolution;
|
|
-
|
|
-/* ISR GPTU Timer 6 for high resolution timer */
|
|
-static void amazon_timer6_interrupt(int irq, void *dev_id)
|
|
+void __init plat_time_init(void)
|
|
{
|
|
- timer_interrupt(AMAZON_TIMER6_INT, NULL);
|
|
-}
|
|
-
|
|
-static struct irqaction hrt_irqaction = {
|
|
- .handler = amazon_timer6_interrupt,
|
|
- .flags = IRQF_DISABLED,
|
|
- .name = "hrt",
|
|
-};
|
|
+ mips_hpt_frequency = amazon_get_cpu_hz() / amazon_get_counter_resolution();
|
|
+ r4k_offset = mips_hpt_frequency / HZ;
|
|
+ printk("mips_hpt_frequency:%d\n", mips_hpt_frequency);
|
|
+ printk("r4k_offset: %08x(%d)\n", r4k_offset, r4k_offset);
|
|
|
|
-/*
|
|
- * THe CPU counter for System timer, set to HZ
|
|
- * GPTU Timer 6 for high resolution timer, set to hr_time_resolution
|
|
- * Also misuse this routine to print out the CPU type and clock.
|
|
- */
|
|
-void __init plat_timer_setup(struct irqaction *irq)
|
|
-{
|
|
- /* cpu counter for timer interrupts */
|
|
- setup_irq(MIPS_CPU_TIMER_IRQ, irq);
|
|
+ r4k_cur = (read_c0_count() + r4k_offset);
|
|
+ write_c0_compare(r4k_cur);
|
|
|
|
/* enable the timer in the PMU */
|
|
amazon_writel(amazon_readl(AMAZON_PMU_PWDCR)| AMAZON_PMU_PWDCR_GPT|AMAZON_PMU_PWDCR_FPI, AMAZON_PMU_PWDCR);
|
|
@@ -147,7 +150,6 @@ void __init plat_mem_setup(void)
|
|
}
|
|
|
|
amazon_reboot_setup();
|
|
- board_time_init = amazon_time_init;
|
|
|
|
//stop reset TPE and DFE
|
|
amazon_writel(0, AMAZON_RST_REQ);
|
|
--- a/arch/mips/amazon/interrupt.c
|
|
+++ b/arch/mips/amazon/interrupt.c
|
|
@@ -184,3 +184,10 @@ void __init arch_init_irq(void)
|
|
set_irq_chip(i, &amazon_irq_type);
|
|
}
|
|
}
|
|
+
|
|
+void __cpuinit arch_fixup_c0_irqs(void)
|
|
+{
|
|
+ /* FIXME: check for CPUID and only do fix for specific chips/versions */
|
|
+ cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
|
|
+ cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ;
|
|
+}
|