/*
- * Copyright 2006 Freescale Semiconductor
+ * Copyright 2006,2010 Freescale Semiconductor
* Jeff Brown
* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
*
#include <common.h>
#include <command.h>
-#include <watchdog.h>
-
-#ifdef CONFIG_FSL_PIXIS
-#include <asm/cache.h>
-#include "pixis.h"
-
-
-static ulong strfractoint(uchar *strptr);
+#include <asm/io.h>
+#define pixis_base (u8 *)PIXIS_BASE
/*
* Simple board reset.
*/
void pixis_reset(void)
{
- out8(PIXIS_BASE + PIXIS_RST, 0);
-}
+ out_8(pixis_base + PIXIS_RST, 0);
+ while (1);
+}
/*
* Per table 27, page 58 of MPC8641HPCN spec.
*/
-int set_px_sysclk(ulong sysclk)
+static int set_px_sysclk(unsigned long sysclk)
{
u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux;
vclkh = (sysclk_s << 5) | sysclk_r;
vclkl = sysclk_v;
- out8(PIXIS_BASE + PIXIS_VCLKH, vclkh);
- out8(PIXIS_BASE + PIXIS_VCLKL, vclkl);
+ out_8(pixis_base + PIXIS_VCLKH, vclkh);
+ out_8(pixis_base + PIXIS_VCLKL, vclkl);
- out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux);
+ out_8(pixis_base + PIXIS_AUX, sysclk_aux);
return 1;
}
-
-int set_px_mpxpll(ulong mpxpll)
+/* Set the CFG_SYSPLL bits
+ *
+ * This only has effect if PX_VCFGEN0[SYSPLL]=1, which is true if
+ * read_from_px_regs() is called.
+ */
+static int set_px_mpxpll(unsigned long mpxpll)
{
- u8 tmp;
- u8 val;
-
switch (mpxpll) {
case 2:
case 4:
case 12:
case 14:
case 16:
- val = (u8) mpxpll;
- break;
- default:
- printf("Unsupported MPXPLL ratio.\n");
- return 0;
+ clrsetbits_8(pixis_base + PIXIS_VSPEED1, 0x1F, mpxpll);
+ return 1;
}
- tmp = in8(PIXIS_BASE + PIXIS_VSPEED1);
- tmp = (tmp & 0xF0) | (val & 0x0F);
- out8(PIXIS_BASE + PIXIS_VSPEED1, tmp);
-
- return 1;
+ printf("Unsupported MPXPLL ratio.\n");
+ return 0;
}
-
-int set_px_corepll(ulong corepll)
+static int set_px_corepll(unsigned long corepll)
{
- u8 tmp;
u8 val;
- switch ((int)corepll) {
+ switch (corepll) {
case 20:
val = 0x08;
break;
return 0;
}
- tmp = in8(PIXIS_BASE + PIXIS_VSPEED0);
- tmp = (tmp & 0xE0) | (val & 0x1F);
- out8(PIXIS_BASE + PIXIS_VSPEED0, tmp);
-
+ clrsetbits_8(pixis_base + PIXIS_VSPEED0, 0x1F, val);
return 1;
}
+#ifndef CONFIG_SYS_PIXIS_VCFGEN0_ENABLE
+#define CONFIG_SYS_PIXIS_VCFGEN0_ENABLE 0x1C
+#endif
-void read_from_px_regs(int set)
+/* Tell the PIXIS where to find the COREPLL, MPXPLL, SYSCLK values
+ *
+ * The PIXIS can be programmed to look at either the on-board dip switches
+ * or various other PIXIS registers to determine the values for COREPLL,
+ * MPXPLL, and SYSCLK.
+ *
+ * CONFIG_SYS_PIXIS_VCFGEN0_ENABLE is the value to write to the PIXIS_VCFGEN0
+ * register that tells the pixis to use the various PIXIS register.
+ */
+static void read_from_px_regs(int set)
{
- u8 mask = 0x1C;
- u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0);
+ u8 tmp = in_8(pixis_base + PIXIS_VCFGEN0);
if (set)
- tmp = tmp | mask;
+ tmp = tmp | CONFIG_SYS_PIXIS_VCFGEN0_ENABLE;
else
- tmp = tmp & ~mask;
- out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp);
+ tmp = tmp & ~CONFIG_SYS_PIXIS_VCFGEN0_ENABLE;
+
+ out_8(pixis_base + PIXIS_VCFGEN0, tmp);
}
+/* CONFIG_SYS_PIXIS_VBOOT_ENABLE is the value to write to the PX_VCFGEN1
+ * register that tells the pixis to use the PX_VBOOT[LBMAP] register.
+ */
+#ifndef CONFIG_SYS_PIXIS_VBOOT_ENABLE
+#define CONFIG_SYS_PIXIS_VBOOT_ENABLE 0x04
+#endif
-void read_from_px_regs_altbank(int set)
+/* Configure the source of the boot location
+ *
+ * The PIXIS can be programmed to look at either the on-board dip switches
+ * or the PX_VBOOT[LBMAP] register to determine where we should boot.
+ *
+ * If we want to boot from the alternate boot bank, we need to tell the PIXIS
+ * to ignore the on-board dip switches and use the PX_VBOOT[LBMAP] instead.
+ */
+static void read_from_px_regs_altbank(int set)
{
- u8 mask = 0x04;
- u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1);
+ u8 tmp = in_8(pixis_base + PIXIS_VCFGEN1);
if (set)
- tmp = tmp | mask;
+ tmp = tmp | CONFIG_SYS_PIXIS_VBOOT_ENABLE;
else
- tmp = tmp & ~mask;
- out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp);
+ tmp = tmp & ~CONFIG_SYS_PIXIS_VBOOT_ENABLE;
+
+ out_8(pixis_base + PIXIS_VCFGEN1, tmp);
}
-#ifndef CFG_PIXIS_VBOOT_MASK
-#define CFG_PIXIS_VBOOT_MASK 0x40
+/* CONFIG_SYS_PIXIS_VBOOT_MASK contains the bits to set in VBOOT register that
+ * tells the PIXIS what the alternate flash bank is.
+ *
+ * Note that it's not really a mask. It contains the actual LBMAP bits that
+ * must be set to select the alternate bank. This code assumes that the
+ * primary bank has these bits set to 0, and the alternate bank has these
+ * bits set to 1.
+ */
+#ifndef CONFIG_SYS_PIXIS_VBOOT_MASK
+#define CONFIG_SYS_PIXIS_VBOOT_MASK (0x40)
#endif
-void set_altbank(void)
+/* Tell the PIXIS to boot from the default flash bank
+ *
+ * Program the default flash bank into the VBOOT register. This register is
+ * used only if PX_VCFGEN1[FLASH]=1.
+ */
+static void clear_altbank(void)
{
- u8 tmp;
-
- tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
- tmp ^= CFG_PIXIS_VBOOT_MASK;
-
- out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
+ clrbits_8(pixis_base + PIXIS_VBOOT, CONFIG_SYS_PIXIS_VBOOT_MASK);
}
+/* Tell the PIXIS to boot from the alternate flash bank
+ *
+ * Program the alternate flash bank into the VBOOT register. This register is
+ * used only if PX_VCFGEN1[FLASH]=1.
+ */
+static void set_altbank(void)
+{
+ setbits_8(pixis_base + PIXIS_VBOOT, CONFIG_SYS_PIXIS_VBOOT_MASK);
+}
-void set_px_go(void)
+/* Reset the board with watchdog disabled.
+ *
+ * This respects the altbank setting.
+ */
+static void set_px_go(void)
{
- u8 tmp;
+ /* Disable the VELA sequencer and watchdog */
+ clrbits_8(pixis_base + PIXIS_VCTL, 9);
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ /* Reboot by starting the VELA sequencer */
+ setbits_8(pixis_base + PIXIS_VCTL, 0x1);
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp | 0x01;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ while (1);
}
-
-void set_px_go_with_watchdog(void)
+/* Reset the board with watchdog enabled.
+ *
+ * This respects the altbank setting.
+ */
+static void set_px_go_with_watchdog(void)
{
- u8 tmp;
+ /* Disable the VELA sequencer */
+ clrbits_8(pixis_base + PIXIS_VCTL, 1);
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ /* Enable the watchdog and reboot by starting the VELA sequencer */
+ setbits_8(pixis_base + PIXIS_VCTL, 0x9);
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp | 0x09;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ while (1);
}
+/* Disable the watchdog
+ *
+ */
+static int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ /* Disable the VELA sequencer and the watchdog */
+ clrbits_8(pixis_base + PIXIS_VCTL, 9);
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ diswd, 1, 0, pixis_disable_watchdog_cmd,
+ "Disable watchdog timer",
+ ""
+);
+
+#ifdef CONFIG_PIXIS_SGMII_CMD
-int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp,
- int flag, int argc, char *argv[])
+/* Enable or disable SGMII mode for a TSEC
+ */
+static int pixis_set_sgmii(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u8 tmp;
+ int which_tsec = -1;
+ unsigned char mask;
+ unsigned char switch_mask;
+
+ if ((argc > 2) && (strcmp(argv[1], "all") != 0))
+ which_tsec = simple_strtoul(argv[1], NULL, 0);
+
+ switch (which_tsec) {
+#ifdef CONFIG_TSEC1
+ case 1:
+ mask = PIXIS_VSPEED2_TSEC1SER;
+ switch_mask = PIXIS_VCFGEN1_TSEC1SER;
+ break;
+#endif
+#ifdef CONFIG_TSEC2
+ case 2:
+ mask = PIXIS_VSPEED2_TSEC2SER;
+ switch_mask = PIXIS_VCFGEN1_TSEC2SER;
+ break;
+#endif
+#ifdef CONFIG_TSEC3
+ case 3:
+ mask = PIXIS_VSPEED2_TSEC3SER;
+ switch_mask = PIXIS_VCFGEN1_TSEC3SER;
+ break;
+#endif
+#ifdef CONFIG_TSEC4
+ case 4:
+ mask = PIXIS_VSPEED2_TSEC4SER;
+ switch_mask = PIXIS_VCFGEN1_TSEC4SER;
+ break;
+#endif
+ default:
+ mask = PIXIS_VSPEED2_MASK;
+ switch_mask = PIXIS_VCFGEN1_MASK;
+ break;
+ }
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ /* Toggle whether the switches or FPGA control the settings */
+ if (!strcmp(argv[argc - 1], "switch"))
+ clrbits_8(pixis_base + PIXIS_VCFGEN1, switch_mask);
+ else
+ setbits_8(pixis_base + PIXIS_VCFGEN1, switch_mask);
- /* setting VCTL[WDEN] to 0 to disable watch dog */
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp &= ~0x08;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+ /* If it's not the switches, enable or disable SGMII, as specified */
+ if (!strcmp(argv[argc - 1], "on"))
+ clrbits_8(pixis_base + PIXIS_VSPEED2, mask);
+ else if (!strcmp(argv[argc - 1], "off"))
+ setbits_8(pixis_base + PIXIS_VSPEED2, mask);
return 0;
}
U_BOOT_CMD(
- diswd, 1, 0, pixis_disable_watchdog_cmd,
- "diswd - Disable watchdog timer \n",
- NULL);
+ pixis_set_sgmii, CONFIG_SYS_MAXARGS, 1, pixis_set_sgmii,
+ "pixis_set_sgmii"
+ " - Enable or disable SGMII mode for a given TSEC \n",
+ "\npixis_set_sgmii [TSEC num] <on|off|switch>\n"
+ " TSEC num: 1,2,3,4 or 'all'. 'all' is default.\n"
+ " on - enables SGMII\n"
+ " off - disables SGMII\n"
+ " switch - use switch settings"
+);
+
+#endif
/*
* This function takes the non-integral cpu:mpx pll ratio
* FPGA register values.
* input: strptr i.e. argv[2]
*/
-
-static ulong strfractoint(uchar *strptr)
+static unsigned long strfractoint(char *strptr)
{
- int i, j, retval;
+ int i, j;
int mulconst;
- int intarr_len = 0, decarr_len = 0, no_dec = 0;
- ulong intval = 0, decval = 0;
- uchar intarr[3], decarr[3];
+ int no_dec = 0;
+ unsigned long intval = 0, decval = 0;
+ char intarr[3], decarr[3];
/* Assign the integer part to intarr[]
* If there is no decimal point i.e.
* simply create the intarr.
*/
i = 0;
- while (strptr[i] != 46) {
+ while (strptr[i] != '.') {
if (strptr[i] == 0) {
no_dec = 1;
break;
i++;
}
- /* Assign length of integer part to intarr_len. */
- intarr_len = i;
intarr[i] = '\0';
if (no_dec) {
} else {
j = 0;
i++; /* Skipping the decimal point */
- while ((strptr[i] > 47) && (strptr[i] < 58)) {
+ while ((strptr[i] >= '0') && (strptr[i] <= '9')) {
decarr[j] = strptr[i];
i++;
j++;
}
- decarr_len = j;
decarr[j] = '\0';
mulconst = 1;
- for (i = 0; i < decarr_len; i++)
+ for (i = 0; i < j; i++)
mulconst *= 10;
- decval = simple_strtoul((char *)decarr, NULL, 10);
+ decval = simple_strtoul(decarr, NULL, 10);
}
- intval = simple_strtoul((char *)intarr, NULL, 10);
+ intval = simple_strtoul(intarr, NULL, 10);
intval = intval * mulconst;
- retval = intval + decval;
-
- return retval;
+ return intval + decval;
}
-
-int
-pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+static int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- ulong val;
- ulong corepll;
+ unsigned int i;
+ char *p_cf = NULL;
+ char *p_cf_sysclk = NULL;
+ char *p_cf_corepll = NULL;
+ char *p_cf_mpxpll = NULL;
+ char *p_altbank = NULL;
+ char *p_wd = NULL;
+ int unknown_param = 0;
/*
* No args is a simple reset request.
/* not reached */
}
- if (strcmp(argv[1], "cf") == 0) {
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "cf") == 0) {
+ p_cf = argv[i];
+ if (i + 3 >= argc) {
+ break;
+ }
+ p_cf_sysclk = argv[i+1];
+ p_cf_corepll = argv[i+2];
+ p_cf_mpxpll = argv[i+3];
+ i += 3;
+ continue;
+ }
- /*
- * Reset with frequency changed:
- * cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
- */
- if (argc < 5) {
- puts(cmdtp->usage);
- return 1;
+ if (strcmp(argv[i], "altbank") == 0) {
+ p_altbank = argv[i];
+ continue;
}
- read_from_px_regs(0);
-
- val = set_px_sysclk(simple_strtoul(argv[2], NULL, 10));
-
- corepll = strfractoint((uchar *)argv[3]);
- val = val + set_px_corepll(corepll);
- val = val + set_px_mpxpll(simple_strtoul(argv[4], NULL, 10));
- if (val == 3) {
- puts("Setting registers VCFGEN0 and VCTL\n");
- read_from_px_regs(1);
- puts("Resetting board with values from ");
- puts("VSPEED0, VSPEED1, VCLKH, and VCLKL \n");
- set_px_go();
- } else {
- puts(cmdtp->usage);
- return 1;
+ if (strcmp(argv[i], "wd") == 0) {
+ p_wd = argv[i];
+ continue;
}
- while (1) ; /* Not reached */
-
- } else if (strcmp(argv[1], "altbank") == 0) {
-
- /*
- * Reset using alternate flash bank:
- */
- if (argv[2] == 0) {
- /*
- * Reset from alternate bank without changing
- * frequency and without watchdog timer enabled.
- * altbank
- */
- read_from_px_regs(0);
- read_from_px_regs_altbank(0);
- if (argc > 2) {
- puts(cmdtp->usage);
- return 1;
- }
- puts("Setting registers VCFGNE1, VBOOT, and VCTL\n");
- set_altbank();
- read_from_px_regs_altbank(1);
- puts("Resetting board to boot from the other bank.\n");
- set_px_go();
-
- } else if (strcmp(argv[2], "cf") == 0) {
- /*
- * Reset with frequency changed
- * altbank cf <SYSCLK freq> <COREPLL ratio>
- * <MPXPLL ratio>
- */
- read_from_px_regs(0);
- read_from_px_regs_altbank(0);
- val = set_px_sysclk(simple_strtoul(argv[3], NULL, 10));
- corepll = strfractoint((uchar *)argv[4]);
- val = val + set_px_corepll(corepll);
- val = val + set_px_mpxpll(simple_strtoul(argv[5],
- NULL, 10));
- if (val == 3) {
- puts("Setting registers VCFGEN0, VCFGEN1, VBOOT, and VCTL\n");
- set_altbank();
- read_from_px_regs(1);
- read_from_px_regs_altbank(1);
- puts("Enabling watchdog timer on the FPGA\n");
- puts("Resetting board with values from ");
- puts("VSPEED0, VSPEED1, VCLKH and VCLKL ");
- puts("to boot from the other bank.\n");
- set_px_go_with_watchdog();
- } else {
- puts(cmdtp->usage);
- return 1;
- }
+ unknown_param = 1;
+ }
+
+ /*
+ * Check that cf has all required parms
+ */
+ if ((p_cf && !(p_cf_sysclk && p_cf_corepll && p_cf_mpxpll))
+ || unknown_param) {
+#ifdef CONFIG_SYS_LONGHELP
+ puts(cmdtp->help);
+ putc('\n');
+#endif
+ return 1;
+ }
- while (1) ; /* Not reached */
-
- } else if (strcmp(argv[2], "wd") == 0) {
- /*
- * Reset from alternate bank without changing
- * frequencies but with watchdog timer enabled:
- * altbank wd
- */
- read_from_px_regs(0);
- read_from_px_regs_altbank(0);
- puts("Setting registers VCFGEN1, VBOOT, and VCTL\n");
- set_altbank();
- read_from_px_regs_altbank(1);
- puts("Enabling watchdog timer on the FPGA\n");
- puts("Resetting board to boot from the other bank.\n");
- set_px_go_with_watchdog();
- while (1) ; /* Not reached */
-
- } else {
- puts(cmdtp->usage);
+ /*
+ * PIXIS seems to be sensitive to the ordering of
+ * the registers that are touched.
+ */
+ read_from_px_regs(0);
+
+ if (p_altbank)
+ read_from_px_regs_altbank(0);
+
+ clear_altbank();
+
+ /*
+ * Clock configuration specified.
+ */
+ if (p_cf) {
+ unsigned long sysclk;
+ unsigned long corepll;
+ unsigned long mpxpll;
+
+ sysclk = simple_strtoul(p_cf_sysclk, NULL, 10);
+ corepll = strfractoint(p_cf_corepll);
+ mpxpll = simple_strtoul(p_cf_mpxpll, NULL, 10);
+
+ if (!(set_px_sysclk(sysclk)
+ && set_px_corepll(corepll)
+ && set_px_mpxpll(mpxpll))) {
+#ifdef CONFIG_SYS_LONGHELP
+ puts(cmdtp->help);
+ putc('\n');
+#endif
return 1;
}
+ read_from_px_regs(1);
+ }
- } else {
- puts(cmdtp->usage);
- return 1;
+ /*
+ * Altbank specified
+ *
+ * NOTE CHANGE IN BEHAVIOR: previous code would default
+ * to enabling watchdog if altbank is specified.
+ * Now the watchdog must be enabled explicitly using 'wd'.
+ */
+ if (p_altbank) {
+ set_altbank();
+ read_from_px_regs_altbank(1);
}
+ /*
+ * Reset with watchdog specified.
+ */
+ if (p_wd)
+ set_px_go_with_watchdog();
+ else
+ set_px_go();
+
+ /*
+ * Shouldn't be reached.
+ */
return 0;
}
U_BOOT_CMD(
- pixis_reset, CFG_MAXARGS, 1, pixis_reset_cmd,
- "pixis_reset - Reset the board using the FPGA sequencer\n",
+ pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
+ "Reset the board using the FPGA sequencer",
" pixis_reset\n"
" pixis_reset [altbank]\n"
" pixis_reset altbank wd\n"
" pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n"
- " pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n"
- );
-#endif /* CONFIG_FSL_PIXIS */
+ " pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>"
+);
projects / karo-tx-uboot.git / blobdiff