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Diffstat (limited to 'cpu/at32ap/cpu.c')
-rw-r--r--cpu/at32ap/cpu.c50
1 files changed, 5 insertions, 45 deletions
diff --git a/cpu/at32ap/cpu.c b/cpu/at32ap/cpu.c
index 311466b..0ba8361 100644
--- a/cpu/at32ap/cpu.c
+++ b/cpu/at32ap/cpu.c
@@ -30,7 +30,6 @@
#include <asm/arch/memory-map.h>
#include "hsmc3.h"
-#include "sm.h"
/* Sanity checks */
#if (CFG_CLKDIV_CPU > CFG_CLKDIV_HSB) \
@@ -44,47 +43,9 @@
DECLARE_GLOBAL_DATA_PTR;
-static void pm_init(void)
-{
- uint32_t cksel;
-
-#ifdef CONFIG_PLL
- /* Initialize the PLL */
- sm_writel(PM_PLL0, (SM_BF(PLLCOUNT, CFG_PLL0_SUPPRESS_CYCLES)
- | SM_BF(PLLMUL, CFG_PLL0_MUL - 1)
- | SM_BF(PLLDIV, CFG_PLL0_DIV - 1)
- | SM_BF(PLLOPT, CFG_PLL0_OPT)
- | SM_BF(PLLOSC, 0)
- | SM_BIT(PLLEN)));
-
- /* Wait for lock */
- while (!(sm_readl(PM_ISR) & SM_BIT(LOCK0))) ;
-#endif
-
- /* Set up clocks for the CPU and all peripheral buses */
- cksel = 0;
- if (CFG_CLKDIV_CPU)
- cksel |= SM_BIT(CPUDIV) | SM_BF(CPUSEL, CFG_CLKDIV_CPU - 1);
- if (CFG_CLKDIV_HSB)
- cksel |= SM_BIT(HSBDIV) | SM_BF(HSBSEL, CFG_CLKDIV_HSB - 1);
- if (CFG_CLKDIV_PBA)
- cksel |= SM_BIT(PBADIV) | SM_BF(PBASEL, CFG_CLKDIV_PBA - 1);
- if (CFG_CLKDIV_PBB)
- cksel |= SM_BIT(PBBDIV) | SM_BF(PBBSEL, CFG_CLKDIV_PBB - 1);
- sm_writel(PM_CKSEL, cksel);
-
- gd->cpu_hz = get_cpu_clk_rate();
-
-#ifdef CONFIG_PLL
- /* Use PLL0 as main clock */
- sm_writel(PM_MCCTRL, SM_BIT(PLLSEL));
-#endif
-}
-
int cpu_init(void)
{
extern void _evba(void);
- char *p;
gd->cpu_hz = CFG_OSC0_HZ;
@@ -95,16 +56,15 @@ int cpu_init(void)
hsmc3_writel(PULSE0, 0x0b0a0906);
hsmc3_writel(SETUP0, 0x00010002);
- pm_init();
+ clk_init();
+ /* Update the CPU speed according to the PLL configuration */
+ gd->cpu_hz = get_cpu_clk_rate();
+
+ /* Set up the exception handler table and enable exceptions */
sysreg_write(EVBA, (unsigned long)&_evba);
asm volatile("csrf %0" : : "i"(SYSREG_EM_OFFSET));
- /* Lock everything that mess with the flash in the icache */
- for (p = __flashprog_start; p <= (__flashprog_end + CFG_ICACHE_LINESZ);
- p += CFG_ICACHE_LINESZ)
- asm volatile("cache %0, 0x02" : "=m"(*p) :: "memory");
-
return 0;
}