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-rw-r--r--cpu/ppc4xx/speed.c233
1 files changed, 205 insertions, 28 deletions
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
index da5330a..9006614 100644
--- a/cpu/ppc4xx/speed.c
+++ b/cpu/ppc4xx/speed.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2000
+ * (C) Copyright 2000-2007
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
@@ -37,7 +37,7 @@ DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_405GP) || defined(CONFIG_405CR)
-void get_sys_info (PPC405_SYS_INFO * sysInfo)
+void get_sys_info (PPC4xx_SYS_INFO * sysInfo)
{
unsigned long pllmr;
unsigned long sysClkPeriodPs = ONE_BILLION / (CONFIG_SYS_CLK_FREQ / 1000);
@@ -162,6 +162,8 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
sysInfo->freqProcessor = sysInfo->freqPLB * sysInfo->pllPlbDiv;
}
}
+
+ sysInfo->freqUART = sysInfo->freqProcessor;
}
@@ -173,7 +175,7 @@ ulong get_OPB_freq (void)
{
ulong val = 0;
- PPC405_SYS_INFO sys_info;
+ PPC4xx_SYS_INFO sys_info;
get_sys_info (&sys_info);
val = sys_info.freqPLB / sys_info.pllOpbDiv;
@@ -189,7 +191,7 @@ ulong get_OPB_freq (void)
ulong get_PCI_freq (void)
{
ulong val;
- PPC405_SYS_INFO sys_info;
+ PPC4xx_SYS_INFO sys_info;
get_sys_info (&sys_info);
val = sys_info.freqPLB / sys_info.pllPciDiv;
@@ -216,7 +218,7 @@ void get_sys_info (sys_info_t *sysInfo)
*/
/* Decode CPR0_PLLD0 for divisors */
- mfclk(clk_plld, reg);
+ mfcpr(clk_plld, reg);
temp = (reg & PLLD_FWDVA_MASK) >> 16;
sysInfo->pllFwdDivA = temp ? temp : 16;
temp = (reg & PLLD_FWDVB_MASK) >> 8;
@@ -225,19 +227,19 @@ void get_sys_info (sys_info_t *sysInfo)
sysInfo->pllFbkDiv = temp ? temp : 32;
lfdiv = reg & PLLD_LFBDV_MASK;
- mfclk(clk_opbd, reg);
+ mfcpr(clk_opbd, reg);
temp = (reg & OPBDDV_MASK) >> 24;
sysInfo->pllOpbDiv = temp ? temp : 4;
- mfclk(clk_perd, reg);
+ mfcpr(clk_perd, reg);
temp = (reg & PERDV_MASK) >> 24;
sysInfo->pllExtBusDiv = temp ? temp : 8;
- mfclk(clk_primbd, reg);
+ mfcpr(clk_primbd, reg);
temp = (reg & PRBDV_MASK) >> 24;
prbdv0 = temp ? temp : 8;
- mfclk(clk_spcid, reg);
+ mfcpr(clk_spcid, reg);
temp = (reg & SPCID_MASK) >> 24;
sysInfo->pllPciDiv = temp ? temp : 4;
@@ -246,7 +248,7 @@ void get_sys_info (sys_info_t *sysInfo)
temp = (reg & PLLSYS0_SEL_MASK) >> 27;
if (temp == 0) { /* PLL output */
/* Figure which pll to use */
- mfclk(clk_pllc, reg);
+ mfcpr(clk_pllc, reg);
temp = (reg & PLLC_SRC_MASK) >> 29;
if (!temp) /* PLLOUTA */
m = sysInfo->pllFbkDiv * lfdiv * sysInfo->pllFwdDivA;
@@ -263,8 +265,9 @@ void get_sys_info (sys_info_t *sysInfo)
sysInfo->freqProcessor = sysInfo->freqVCOMhz/sysInfo->pllFwdDivA;
sysInfo->freqPLB = sysInfo->freqVCOMhz/sysInfo->pllFwdDivB/prbdv0;
sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
- sysInfo->freqEPB = sysInfo->freqPLB/sysInfo->pllExtBusDiv;
+ sysInfo->freqEBC = sysInfo->freqPLB/sysInfo->pllExtBusDiv;
sysInfo->freqPCI = sysInfo->freqPLB/sysInfo->pllPciDiv;
+ sysInfo->freqUART = sysInfo->freqPLB;
/* Figure which timer source to use */
if (mfspr(ccr1) & 0x0080) { /* External Clock, assume same as SYS_CLK */
@@ -277,6 +280,7 @@ void get_sys_info (sys_info_t *sysInfo)
else /* Internal clock */
sysInfo->freqTmrClk = sysInfo->freqProcessor;
}
+
/********************************************
* get_PCI_freq
* return PCI bus freq in Hz
@@ -317,8 +321,8 @@ void get_sys_info (sys_info_t * sysInfo)
if( get_pvr() == PVR_440GP_RB ) /* Rev B divs an extra 2 -- geez! */
sysInfo->freqPLB >>= 1;
sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
- sysInfo->freqEPB = sysInfo->freqOPB/sysInfo->pllExtBusDiv;
-
+ sysInfo->freqEBC = sysInfo->freqOPB/sysInfo->pllExtBusDiv;
+ sysInfo->freqUART = sysInfo->freqPLB;
}
#else
void get_sys_info (sys_info_t * sysInfo)
@@ -393,7 +397,7 @@ void get_sys_info (sys_info_t * sysInfo)
sysInfo->freqProcessor = sysInfo->freqVCOMhz/sysInfo->pllFwdDivA;
sysInfo->freqPLB = sysInfo->freqVCOMhz/sysInfo->pllFwdDivB/prbdv0;
sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
- sysInfo->freqEPB = sysInfo->freqOPB/sysInfo->pllExtBusDiv;
+ sysInfo->freqEBC = sysInfo->freqOPB/sysInfo->pllExtBusDiv;
#if defined(CONFIG_YUCCA)
/* Determine PCI Clock Period */
@@ -403,7 +407,7 @@ void get_sys_info (sys_info_t * sysInfo)
sysInfo->freqDDR = ((sysInfo->freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll));
#endif
-
+ sysInfo->freqUART = sysInfo->freqPLB;
}
#endif
@@ -632,7 +636,8 @@ extern void get_sys_info (sys_info_t * sysInfo);
extern ulong get_PCI_freq (void);
#elif defined(CONFIG_AP1000)
-void get_sys_info (sys_info_t * sysInfo) {
+void get_sys_info (sys_info_t * sysInfo)
+{
sysInfo->freqProcessor = 240 * 1000 * 1000;
sysInfo->freqPLB = 80 * 1000 * 1000;
sysInfo->freqPCI = 33 * 1000 * 1000;
@@ -640,17 +645,16 @@ void get_sys_info (sys_info_t * sysInfo) {
#elif defined(CONFIG_405)
-void get_sys_info (sys_info_t * sysInfo) {
-
+void get_sys_info (sys_info_t * sysInfo)
+{
sysInfo->freqVCOMhz=3125000;
sysInfo->freqProcessor=12*1000*1000;
sysInfo->freqPLB=50*1000*1000;
sysInfo->freqPCI=66*1000*1000;
-
}
#elif defined(CONFIG_405EP)
-void get_sys_info (PPC405_SYS_INFO * sysInfo)
+void get_sys_info (PPC4xx_SYS_INFO * sysInfo)
{
unsigned long pllmr0;
unsigned long pllmr1;
@@ -678,9 +682,8 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
* Determine FBK_DIV.
*/
sysInfo->pllFbkDiv = ((pllmr1 & PLLMR1_FBMUL_MASK) >> 20);
- if (sysInfo->pllFbkDiv == 0) {
+ if (sysInfo->pllFbkDiv == 0)
sysInfo->pllFbkDiv = 16;
- }
/*
* Determine PLB_DIV.
@@ -733,6 +736,10 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
* Determine PLB clock frequency
*/
sysInfo->freqPLB = sysInfo->freqProcessor / sysInfo->pllPlbDiv;
+
+ sysInfo->freqEBC = sysInfo->freqPLB / sysInfo->pllExtBusDiv;
+
+ sysInfo->freqUART = sysInfo->freqProcessor * pllmr0_ccdv;
}
@@ -744,7 +751,7 @@ ulong get_OPB_freq (void)
{
ulong val = 0;
- PPC405_SYS_INFO sys_info;
+ PPC4xx_SYS_INFO sys_info;
get_sys_info (&sys_info);
val = sys_info.freqPLB / sys_info.pllOpbDiv;
@@ -760,7 +767,7 @@ ulong get_OPB_freq (void)
ulong get_PCI_freq (void)
{
ulong val;
- PPC405_SYS_INFO sys_info;
+ PPC4xx_SYS_INFO sys_info;
get_sys_info (&sys_info);
val = sys_info.freqPLB / sys_info.pllPciDiv;
@@ -768,7 +775,7 @@ ulong get_PCI_freq (void)
}
#elif defined(CONFIG_405EZ)
-void get_sys_info (PPC405_SYS_INFO * sysInfo)
+void get_sys_info (PPC4xx_SYS_INFO * sysInfo)
{
unsigned long cpr_plld;
unsigned long cpr_pllc;
@@ -806,6 +813,7 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
* Read CPR_PRIMAD register
*/
mfcpr(cprprimad, cpr_primad);
+
/*
* Determine PLB_DIV.
*/
@@ -856,6 +864,11 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
*/
sysInfo->freqPLB = (CONFIG_SYS_CLK_FREQ * m) /
sysInfo->pllFwdDiv / sysInfo->pllPlbDiv;
+
+ sysInfo->freqEBC = (CONFIG_SYS_CLK_FREQ * sysInfo->pllFbkDiv) /
+ sysInfo->pllExtBusDiv;
+
+ sysInfo->freqUART = sysInfo->freqVCOHz;
}
/********************************************
@@ -866,7 +879,7 @@ ulong get_OPB_freq (void)
{
ulong val = 0;
- PPC405_SYS_INFO sys_info;
+ PPC4xx_SYS_INFO sys_info;
get_sys_info (&sys_info);
val = (CONFIG_SYS_CLK_FREQ * sys_info.pllFbkDiv) / sys_info.pllOpbDiv;
@@ -874,13 +887,176 @@ ulong get_OPB_freq (void)
return val;
}
+#elif defined(CONFIG_405EX)
+
+/*
+ * TODO: We need to get the CPR registers and calculate these values correctly!!!!
+ * We need the specs!!!!
+ */
+static unsigned char get_fbdv(unsigned char index)
+{
+ unsigned char ret = 0;
+ /* This is table should be 256 bytes.
+ * Only take first 52 values.
+ */
+ unsigned char fbdv_tb[] = {
+ 0x00, 0xff, 0x7f, 0xfd,
+ 0x7a, 0xf5, 0x6a, 0xd5,
+ 0x2a, 0xd4, 0x29, 0xd3,
+ 0x26, 0xcc, 0x19, 0xb3,
+ 0x67, 0xce, 0x1d, 0xbb,
+ 0x77, 0xee, 0x5d, 0xba,
+ 0x74, 0xe9, 0x52, 0xa5,
+ 0x4b, 0x96, 0x2c, 0xd8,
+ 0x31, 0xe3, 0x46, 0x8d,
+ 0x1b, 0xb7, 0x6f, 0xde,
+ 0x3d, 0xfb, 0x76, 0xed,
+ 0x5a, 0xb5, 0x6b, 0xd6,
+ 0x2d, 0xdb, 0x36, 0xec,
+
+ };
+
+ if ((index & 0x7f) == 0)
+ return 1;
+ while (ret < sizeof (fbdv_tb)) {
+ if (fbdv_tb[ret] == index)
+ break;
+ ret++;
+ }
+ ret++;
+
+ return ret;
+}
+
+#define PLL_FBK_PLL_LOCAL 0
+#define PLL_FBK_CPU 1
+#define PLL_FBK_PERCLK 5
+
+void get_sys_info (sys_info_t * sysInfo)
+{
+ unsigned long sysClkPeriodPs = ONE_BILLION / (CONFIG_SYS_CLK_FREQ / 1000);
+ unsigned long m = 1;
+ unsigned int tmp;
+ unsigned char fwdva[16] = {
+ 1, 2, 14, 9, 4, 11, 16, 13,
+ 12, 5, 6, 15, 10, 7, 8, 3,
+ };
+ unsigned char sel, cpudv0, plb2xDiv;
+
+ mfcpr(cpr0_plld, tmp);
+
+ /*
+ * Determine forward divider A
+ */
+ sysInfo->pllFwdDiv = fwdva[((tmp >> 16) & 0x0f)]; /* FWDVA */
+
+ /*
+ * Determine FBK_DIV.
+ */
+ sysInfo->pllFbkDiv = get_fbdv(((tmp >> 24) & 0x0ff)); /* FBDV */
+
+ /*
+ * Determine PLBDV0
+ */
+ sysInfo->pllPlbDiv = 2;
+
+ /*
+ * Determine PERDV0
+ */
+ mfcpr(cpr0_perd, tmp);
+ tmp = (tmp >> 24) & 0x03;
+ sysInfo->pllExtBusDiv = (tmp == 0) ? 4 : tmp;
+
+ /*
+ * Determine OPBDV0
+ */
+ mfcpr(cpr0_opbd, tmp);
+ tmp = (tmp >> 24) & 0x03;
+ sysInfo->pllOpbDiv = (tmp == 0) ? 4 : tmp;
+
+ /* Determine PLB2XDV0 */
+ mfcpr(cpr0_plbd, tmp);
+ tmp = (tmp >> 16) & 0x07;
+ plb2xDiv = (tmp == 0) ? 8 : tmp;
+
+ /* Determine CPUDV0 */
+ mfcpr(cpr0_cpud, tmp);
+ tmp = (tmp >> 24) & 0x07;
+ cpudv0 = (tmp == 0) ? 8 : tmp;
+
+ /* Determine SEL(5:7) in CPR0_PLLC */
+ mfcpr(cpr0_pllc, tmp);
+ sel = (tmp >> 24) & 0x07;
+
+ /*
+ * Determine the M factor
+ * PLL local: M = FBDV
+ * CPU clock: M = FBDV * FWDVA * CPUDV0
+ * PerClk : M = FBDV * FWDVA * PLB2XDV0 * PLBDV0(2) * OPBDV0 * PERDV0
+ *
+ */
+ switch (sel) {
+ case PLL_FBK_CPU:
+ m = sysInfo->pllFwdDiv * cpudv0;
+ break;
+ case PLL_FBK_PERCLK:
+ m = sysInfo->pllFwdDiv * plb2xDiv * 2
+ * sysInfo->pllOpbDiv * sysInfo->pllExtBusDiv;
+ break;
+ case PLL_FBK_PLL_LOCAL:
+ break;
+ default:
+ printf("%s unknown m\n", __FUNCTION__);
+ return;
+
+ }
+ m *= sysInfo->pllFbkDiv;
+
+ /*
+ * Determine VCO clock frequency
+ */
+ sysInfo->freqVCOHz = (1000000000000LL * (unsigned long long)m) /
+ (unsigned long long)sysClkPeriodPs;
+
+ /*
+ * Determine CPU clock frequency
+ */
+ sysInfo->freqProcessor = sysInfo->freqVCOHz / (sysInfo->pllFwdDiv * cpudv0);
+
+ /*
+ * Determine PLB clock frequency, ddr1x should be the same
+ */
+ sysInfo->freqPLB = sysInfo->freqVCOHz / (sysInfo->pllFwdDiv * plb2xDiv * 2);
+ sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
+ sysInfo->freqDDR = sysInfo->freqPLB;
+ sysInfo->freqEBC = sysInfo->freqOPB / sysInfo->pllExtBusDiv;
+ sysInfo->freqUART = sysInfo->freqPLB;
+}
+
+/********************************************
+ * get_OPB_freq
+ * return OPB bus freq in Hz
+ *********************************************/
+ulong get_OPB_freq (void)
+{
+ ulong val = 0;
+
+ PPC4xx_SYS_INFO sys_info;
+
+ get_sys_info (&sys_info);
+ val = sys_info.freqPLB / sys_info.pllOpbDiv;
+
+ return val;
+}
+
#endif
int get_clocks (void)
{
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
- defined(CONFIG_440) || defined(CONFIG_405)
+ defined(CONFIG_405EX) || defined(CONFIG_405) || \
+ defined(CONFIG_440)
sys_info_t sys_info;
get_sys_info (&sys_info);
@@ -907,7 +1083,8 @@ ulong get_bus_freq (ulong dummy)
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
- defined(CONFIG_440) || defined(CONFIG_405)
+ defined(CONFIG_405EX) || defined(CONFIG_405) || \
+ defined(CONFIG_440)
sys_info_t sys_info;
get_sys_info (&sys_info);
generated by cgit v1.1 at 2024-11-24 22:28:57 +0000