* (at your option) any later version.
*/
-#include <config.h>
+#include <common.h>
+#include <asm/io.h>
#include <asm/arch/hardware.h>
-#include <asm/arch/io.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/clk.h>
-static unsigned long cpu_clk_rate_hz;
-static unsigned long main_clk_rate_hz;
-static unsigned long mck_rate_hz;
-static unsigned long plla_rate_hz;
-static unsigned long pllb_rate_hz;
-static u32 at91_pllb_usb_init;
-
-unsigned long get_cpu_clk_rate(void)
-{
- return cpu_clk_rate_hz;
-}
-
-unsigned long get_main_clk_rate(void)
-{
- return main_clk_rate_hz;
-}
-
-unsigned long get_mck_clk_rate(void)
-{
- return mck_rate_hz;
-}
-
-unsigned long get_plla_clk_rate(void)
-{
- return plla_rate_hz;
-}
-
-unsigned long get_pllb_clk_rate(void)
-{
- return pllb_rate_hz;
-}
+#if !defined(CONFIG_AT91FAMILY)
+# error You need to define CONFIG_AT91FAMILY in your board config!
+#endif
-u32 get_pllb_init(void)
-{
- return at91_pllb_usb_init;
-}
+DECLARE_GLOBAL_DATA_PTR;
static unsigned long at91_css_to_rate(unsigned long css)
{
switch (css) {
case AT91_PMC_MCKR_CSS_SLOW:
- return AT91_SLOW_CLOCK;
+ return CONFIG_SYS_AT91_SLOW_CLOCK;
case AT91_PMC_MCKR_CSS_MAIN:
- return main_clk_rate_hz;
+ return gd->main_clk_rate_hz;
case AT91_PMC_MCKR_CSS_PLLA:
- return plla_rate_hz;
+ return gd->plla_rate_hz;
case AT91_PMC_MCKR_CSS_PLLB:
- return pllb_rate_hz;
+ return gd->pllb_rate_hz;
}
return 0;
int at91_clock_init(unsigned long main_clock)
{
unsigned freq, mckr;
- at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
#ifndef CONFIG_SYS_AT91_MAIN_CLOCK
unsigned tmp;
/*
tmp = readl(&pmc->mcfr);
} while (!(tmp & AT91_PMC_MCFR_MAINRDY));
tmp &= AT91_PMC_MCFR_MAINF_MASK;
- main_clock = tmp * (AT91_SLOW_CLOCK / 16);
+ main_clock = tmp * (CONFIG_SYS_AT91_SLOW_CLOCK / 16);
}
#endif
- main_clk_rate_hz = main_clock;
+ gd->main_clk_rate_hz = main_clock;
/* report if PLLA is more than mildly overclocked */
- plla_rate_hz = at91_pll_rate(main_clock, readl(&pmc->pllar));
+ gd->plla_rate_hz = at91_pll_rate(main_clock, readl(&pmc->pllar));
#ifdef CONFIG_USB_ATMEL
/*
*
* REVISIT: assumes MCK doesn't derive from PLLB!
*/
- at91_pllb_usb_init = at91_pll_calc(main_clock, 48000000 * 2) |
+ gd->at91_pllb_usb_init = at91_pll_calc(main_clock, 48000000 * 2) |
AT91_PMC_PLLBR_USBDIV_2;
- pllb_rate_hz = at91_pll_rate(main_clock, at91_pllb_usb_init);
+ gd->pllb_rate_hz = at91_pll_rate(main_clock, gd->at91_pllb_usb_init);
#endif
/*
mckr = readl(&pmc->mckr);
#if defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
/* plla divisor by 2 */
- plla_rate_hz /= (1 << ((mckr & 1 << 12) >> 12));
+ gd->plla_rate_hz /= (1 << ((mckr & 1 << 12) >> 12));
#endif
- mck_rate_hz = at91_css_to_rate(mckr & AT91_PMC_MCKR_CSS_MASK);
- freq = mck_rate_hz;
+ gd->mck_rate_hz = at91_css_to_rate(mckr & AT91_PMC_MCKR_CSS_MASK);
+ freq = gd->mck_rate_hz;
freq /= (1 << ((mckr & AT91_PMC_MCKR_PRES_MASK) >> 2)); /* prescale */
-#if defined(CONFIG_AT91RM9200)
- /* mdiv */
- mck_rate_hz = freq / (1 + ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
-#elif defined(CONFIG_AT91SAM9G20)
+#if defined(CONFIG_AT91SAM9G20)
/* mdiv ; (x >> 7) = ((x >> 8) * 2) */
- mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ?
+ gd->mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ?
freq / ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 7) : freq;
if (mckr & AT91_PMC_MCKR_MDIV_MASK)
freq /= 2; /* processor clock division */
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
- mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ==
+ gd->mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ==
(AT91_PMC_MCKR_MDIV_2 | AT91_PMC_MCKR_MDIV_4)
? freq / 3
: freq / (1 << ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
#else
- mck_rate_hz = freq / (1 << ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
+ gd->mck_rate_hz = freq / (1 << ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
#endif
- cpu_clk_rate_hz = freq;
+ gd->cpu_clk_rate_hz = freq;
return 0;
}