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Diffstat (limited to 'cpu/mpc86xx/speed.c')
-rw-r--r--cpu/mpc86xx/speed.c260
1 files changed, 126 insertions, 134 deletions
diff --git a/cpu/mpc86xx/speed.c b/cpu/mpc86xx/speed.c
index 0f5a638..a08ae5f 100644
--- a/cpu/mpc86xx/speed.c
+++ b/cpu/mpc86xx/speed.c
@@ -33,9 +33,7 @@ unsigned long get_board_sys_clk(ulong dummy);
unsigned long get_sysclk_from_px_regs(void);
-/* --------------------------------------------------------------- */
-
-void get_sys_info (sys_info_t * sysInfo)
+void get_sys_info (sys_info_t *sysInfo)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
@@ -43,7 +41,7 @@ void get_sys_info (sys_info_t * sysInfo)
plat_ratio = (gur->porpllsr) & 0x0000003e;
plat_ratio >>= 1;
-
+
switch(plat_ratio) {
case 0x0:
sysInfo->freqSystemBus = 16 * CONFIG_SYS_CLK_FREQ;
@@ -65,72 +63,77 @@ void get_sys_info (sys_info_t * sysInfo)
break;
}
- // printf("assigned system bus freq = %d for plat ratio 0x%08lx\n", sysInfo->freqSystemBus, plat_ratio);
+#if 0
+ printf("assigned system bus freq = %d for plat ratio 0x%08lx\n",
+ sysInfo->freqSystemBus, plat_ratio);
+#endif
+
e600_ratio = (gur->porpllsr) & 0x003f0000;
e600_ratio >>= 16;
- switch(e600_ratio) {
+
+ switch (e600_ratio) {
case 0x10:
- sysInfo->freqProcessor = 2*sysInfo->freqSystemBus;
+ sysInfo->freqProcessor = 2 * sysInfo->freqSystemBus;
break;
- case 0x19:
- sysInfo->freqProcessor = 5*sysInfo->freqSystemBus/2;
+ case 0x19:
+ sysInfo->freqProcessor = 5 * sysInfo->freqSystemBus/2;
break;
case 0x20:
- sysInfo->freqProcessor = 3*sysInfo->freqSystemBus;
+ sysInfo->freqProcessor = 3 * sysInfo->freqSystemBus;
break;
case 0x39:
- sysInfo->freqProcessor = 7*sysInfo->freqSystemBus/2;
+ sysInfo->freqProcessor = 7 * sysInfo->freqSystemBus/2;
break;
case 0x28:
- sysInfo->freqProcessor = 4*sysInfo->freqSystemBus;
+ sysInfo->freqProcessor = 4 * sysInfo->freqSystemBus;
break;
case 0x1d:
- sysInfo->freqProcessor = 9*sysInfo->freqSystemBus/2;
+ sysInfo->freqProcessor = 9 * sysInfo->freqSystemBus/2;
break;
default:
- /* JB - Emulator workaround until real cop is plugged in */
- sysInfo->freqProcessor = e600_ratio + sysInfo->freqSystemBus;
- //sysInfo->freqProcessor = 3*sysInfo->freqSystemBus;
+ /* JB - Emulator workaround until real cop is plugged in */
+ /* sysInfo->freqProcessor = 3 * sysInfo->freqSystemBus; */
+ sysInfo->freqProcessor = e600_ratio + sysInfo->freqSystemBus;
break;
}
- // printf("assigned processor freq = %d for e600 ratio 0x%08lx\n", sysInfo->freqProcessor, e600_ratio);
-
+#if 0
+ printf("assigned processor freq = %d for e600 ratio 0x%08lx\n",
+ sysInfo->freqProcessor, e600_ratio);
+#endif
}
-/* ------------------------------------------------------------------------- */
-
/*
* Measure CPU clock speed (core clock GCLK1, GCLK2)
- *
* (Approx. GCLK frequency in Hz)
*/
-int get_clocks (void)
+int get_clocks(void)
{
DECLARE_GLOBAL_DATA_PTR;
sys_info_t sys_info;
- get_sys_info (&sys_info);
+ get_sys_info(&sys_info);
gd->cpu_clk = sys_info.freqProcessor;
gd->bus_clk = sys_info.freqSystemBus;
-
- if(gd->cpu_clk != 0) return (0);
- else return (1);
+
+ if (gd->cpu_clk != 0)
+ return 0;
+ else
+ return 1;
}
-/* ------------------------------------------------------------------------- */
-/********************************************
+
+/*
* get_bus_freq
- * return system bus freq in Hz
- *********************************************/
-ulong get_bus_freq (ulong dummy)
+ * Return system bus freq in Hz
+ */
+ulong get_bus_freq(ulong dummy)
{
ulong val;
-
sys_info_t sys_info;
- get_sys_info (&sys_info);
+ get_sys_info(&sys_info);
val = sys_info.freqSystemBus;
return val;
@@ -138,111 +141,100 @@ ulong get_bus_freq (ulong dummy)
unsigned long get_sysclk_from_px_regs()
{
- ulong val;
- u8 vclkh,vclkl;
-
- vclkh = in8(PIXIS_BASE+PIXIS_VCLKH);
- vclkl = in8(PIXIS_BASE+PIXIS_VCLKL);
-
- if((vclkh == 0x84) && (vclkl ==0x07))
- {
- val = 33000000;
- }
- if((vclkh == 0x3F) && (vclkl ==0x20))
- {
- val = 40000000;
- }
- if((vclkh == 0x3F) && (vclkl ==0x2A))
- {
- val = 50000000;
- }
- if((vclkh == 0x24) && (vclkl ==0x04))
- {
- val = 66000000;
- }
- if((vclkh == 0x3F) && (vclkl ==0x4B))
- {
- val = 83000000;
- }
- if((vclkh == 0x3F) && (vclkl ==0x5C))
- {
- val = 100000000;
- }
- if((vclkh == 0xDF) && (vclkl ==0x3B))
- {
- val = 134000000;
- }
- if((vclkh == 0xDF) && (vclkl ==0x4B))
- {
- val = 166000000;
- }
-
- return val;
+ ulong val;
+ u8 vclkh, vclkl;
+
+ vclkh = in8(PIXIS_BASE + PIXIS_VCLKH);
+ vclkl = in8(PIXIS_BASE + PIXIS_VCLKL);
+
+ if ((vclkh == 0x84) && (vclkl == 0x07)) {
+ val = 33000000;
+ }
+ if ((vclkh == 0x3F) && (vclkl == 0x20)) {
+ val = 40000000;
+ }
+ if ((vclkh == 0x3F) && (vclkl == 0x2A)) {
+ val = 50000000;
+ }
+ if ((vclkh == 0x24) && (vclkl == 0x04)) {
+ val = 66000000;
+ }
+ if ((vclkh == 0x3F) && (vclkl == 0x4B)) {
+ val = 83000000;
+ }
+ if ((vclkh == 0x3F) && (vclkl == 0x5C)) {
+ val = 100000000;
+ }
+ if ((vclkh == 0xDF) && (vclkl == 0x3B)) {
+ val = 134000000;
+ }
+ if ((vclkh == 0xDF) && (vclkl == 0x4B)) {
+ val = 166000000;
+ }
+
+ return val;
}
-/******* From MPC8641HPCN Design Workbook ************
- *
+
+/*
* get_board_sys_clk
- * reads the FPGA on board for CONFIG_SYS_CLK_FREQ
- *
- ********************************************************/
+ * Reads the FPGA on board for CONFIG_SYS_CLK_FREQ
+ */
unsigned long get_board_sys_clk(ulong dummy)
{
- u8 i, go_bit, rd_clks;
- ulong val;
-
- go_bit = in8(PIXIS_BASE+PIXIS_VCTL);
- go_bit &= 0x01;
-
- rd_clks = in8(PIXIS_BASE+PIXIS_VCFGEN0);
- rd_clks &= 0x1C;
-
- /* Only if both go bit and the SCLK bit in VCFGEN0 are set
- * should we be using the AUX register. Remember, we also set the
- * GO bit to boot from the alternate bank on the on-board flash
- */
-
- if(go_bit)
- {
- if(rd_clks == 0x1c)
- i = in8(PIXIS_BASE+PIXIS_AUX);
- else
- i = in8(PIXIS_BASE+PIXIS_SPD);
- //val = get_sysclk_from_px_regs();
- }
- else
- i = in8(PIXIS_BASE+PIXIS_SPD);
-
- i &= 0x07;
-
- switch(i)
- {
- case 0:
- val = 33000000;
- break;
- case 1:
- val = 40000000;
- break;
- case 2:
- val = 50000000;
- break;
- case 3:
- val = 66000000;
- break;
- case 4:
- val = 83000000;
- break;
- case 5:
- val = 100000000;
- break;
- case 6:
- val = 134000000;
- break;
- case 7:
- val = 166000000;
- break;
- }
-
- return val;
+ u8 i, go_bit, rd_clks;
+ ulong val;
+
+ go_bit = in8(PIXIS_BASE + PIXIS_VCTL);
+ go_bit &= 0x01;
+
+ rd_clks = in8(PIXIS_BASE + PIXIS_VCFGEN0);
+ rd_clks &= 0x1C;
+
+ /*
+ * Only if both go bit and the SCLK bit in VCFGEN0 are set
+ * should we be using the AUX register. Remember, we also set the
+ * GO bit to boot from the alternate bank on the on-board flash
+ */
+
+ if (go_bit) {
+ if (rd_clks == 0x1c)
+ i = in8(PIXIS_BASE + PIXIS_AUX);
+ else
+ i = in8(PIXIS_BASE + PIXIS_SPD);
+ } else {
+ i = in8(PIXIS_BASE + PIXIS_SPD);
+ }
+
+ i &= 0x07;
+
+ switch (i) {
+ case 0:
+ val = 33000000;
+ break;
+ case 1:
+ val = 40000000;
+ break;
+ case 2:
+ val = 50000000;
+ break;
+ case 3:
+ val = 66000000;
+ break;
+ case 4:
+ val = 83000000;
+ break;
+ case 5:
+ val = 100000000;
+ break;
+ case 6:
+ val = 134000000;
+ break;
+ case 7:
+ val = 166000000;
+ break;
+ }
+
+ return val;
}
generated by cgit v1.1 at 2024-11-17 09:14:29 +0000