[U-Boot-Users] [PATCH Rev 2] Add PIXIS FPGA support for MPC8641HPCN board.
Jon Loeliger
jdl at freescale.com
Mon Apr 9 21:29:46 CEST 2007
Move the 8641HPCN's PIXIS code to the new directory
board/freescale/common/ as it will be shared by
future boards not in the same processor family.
Write a "pixis_reset" command that utilizes the FPGA
reset sequencer to support alternate soft-reset options
such as using the "alternate" flash bank, enabling
the watch dog, or choosing different CPU frequencies.
Add documentation for the pixis_reset to README.mpc8641hpcn.
Signed-off-by: Haiying Wang <haiying.wang at freescale.com>
Signed-off-by: Jon Loeliger <jdl at freescale.com>
---
This second version of the patch obsoletes the prior
version posted on Friday, 6-Apr-2007 and improves the
appearance of the pixis_reset command's help message.
board/freescale/common/pixis.c | 472 +++++++++++++++++++++++
board/{mpc8641hpcn => freescale/common}/pixis.h | 4 +-
board/mpc8641hpcn/Makefile | 4 +-
board/mpc8641hpcn/mpc8641hpcn.c | 113 +------
board/mpc8641hpcn/pixis.c | 321 ---------------
cpu/mpc86xx/cpu.c | 8 +-
doc/README.mpc8641hpcn | 34 ++
7 files changed, 514 insertions(+), 442 deletions(-)
create mode 100644 board/freescale/common/pixis.c
rename board/{mpc8641hpcn => freescale/common}/pixis.h (90%)
delete mode 100644 board/mpc8641hpcn/pixis.c
diff --git a/board/freescale/common/pixis.c b/board/freescale/common/pixis.c
new file mode 100644
index 0000000..af98157
--- /dev/null
+++ b/board/freescale/common/pixis.c
@@ -0,0 +1,472 @@
+/*
+ * Copyright 2006 Freescale Semiconductor
+ * Jeff Brown
+ * Srikanth Srinivasan (srikanth.srinivasan at freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <watchdog.h>
+#include <asm/cache.h>
+
+#include "pixis.h"
+
+
+static ulong strfractoint(uchar *strptr);
+
+
+/*
+ * Simple board reset.
+ */
+void pixis_reset(void)
+{
+ out8(PIXIS_BASE + PIXIS_RST, 0);
+}
+
+
+/*
+ * Per table 27, page 58 of MPC8641HPCN spec.
+ */
+int set_px_sysclk(ulong sysclk)
+{
+ u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux;
+
+ switch (sysclk) {
+ case 33:
+ sysclk_s = 0x04;
+ sysclk_r = 0x04;
+ sysclk_v = 0x07;
+ sysclk_aux = 0x00;
+ break;
+ case 40:
+ sysclk_s = 0x01;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x20;
+ sysclk_aux = 0x01;
+ break;
+ case 50:
+ sysclk_s = 0x01;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x2A;
+ sysclk_aux = 0x02;
+ break;
+ case 66:
+ sysclk_s = 0x01;
+ sysclk_r = 0x04;
+ sysclk_v = 0x04;
+ sysclk_aux = 0x03;
+ break;
+ case 83:
+ sysclk_s = 0x01;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x4B;
+ sysclk_aux = 0x04;
+ break;
+ case 100:
+ sysclk_s = 0x01;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x5C;
+ sysclk_aux = 0x05;
+ break;
+ case 134:
+ sysclk_s = 0x06;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x3B;
+ sysclk_aux = 0x06;
+ break;
+ case 166:
+ sysclk_s = 0x06;
+ sysclk_r = 0x1F;
+ sysclk_v = 0x4B;
+ sysclk_aux = 0x07;
+ break;
+ default:
+ printf("Unsupported SYSCLK frequency.\n");
+ return 0;
+ }
+
+ vclkh = (sysclk_s << 5) | sysclk_r;
+ vclkl = sysclk_v;
+
+ out8(PIXIS_BASE + PIXIS_VCLKH, vclkh);
+ out8(PIXIS_BASE + PIXIS_VCLKL, vclkl);
+
+ out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux);
+
+ return 1;
+}
+
+
+int set_px_mpxpll(ulong mpxpll)
+{
+ u8 tmp;
+ u8 val;
+
+ switch (mpxpll) {
+ case 2:
+ case 4:
+ case 6:
+ case 8:
+ case 10:
+ case 12:
+ case 14:
+ case 16:
+ val = (u8) mpxpll;
+ break;
+ default:
+ printf("Unsupported MPXPLL ratio.\n");
+ return 0;
+ }
+
+ tmp = in8(PIXIS_BASE + PIXIS_VSPEED1);
+ tmp = (tmp & 0xF0) | (val & 0x0F);
+ out8(PIXIS_BASE + PIXIS_VSPEED1, tmp);
+
+ return 1;
+}
+
+
+int set_px_corepll(ulong corepll)
+{
+ u8 tmp;
+ u8 val;
+
+ switch ((int)corepll) {
+ case 20:
+ val = 0x08;
+ break;
+ case 25:
+ val = 0x0C;
+ break;
+ case 30:
+ val = 0x10;
+ break;
+ case 35:
+ val = 0x1C;
+ break;
+ case 40:
+ val = 0x14;
+ break;
+ case 45:
+ val = 0x0E;
+ break;
+ default:
+ printf("Unsupported COREPLL ratio.\n");
+ return 0;
+ }
+
+ tmp = in8(PIXIS_BASE + PIXIS_VSPEED0);
+ tmp = (tmp & 0xE0) | (val & 0x1F);
+ out8(PIXIS_BASE + PIXIS_VSPEED0, tmp);
+
+ return 1;
+}
+
+
+void read_from_px_regs(int set)
+{
+ u8 mask = 0x1C;
+ u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0);
+
+ if (set)
+ tmp = tmp | mask;
+ else
+ tmp = tmp & ~mask;
+ out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp);
+}
+
+
+void read_from_px_regs_altbank(int set)
+{
+ u8 mask = 0x04;
+ u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1);
+
+ if (set)
+ tmp = tmp | mask;
+ else
+ tmp = tmp & ~mask;
+ out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp);
+}
+
+
+void set_altbank(void)
+{
+ u8 tmp;
+
+ tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
+ tmp ^= 0x40;
+
+ out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
+}
+
+
+void set_px_go(void)
+{
+ u8 tmp;
+
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp = tmp & 0x1E;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp = tmp | 0x01;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+}
+
+
+void set_px_go_with_watchdog(void)
+{
+ u8 tmp;
+
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp = tmp & 0x1E;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp = tmp | 0x09;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+}
+
+
+int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp,
+ int flag, int argc, char *argv[])
+{
+ u8 tmp;
+
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp = tmp & 0x1E;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+
+ /* setting VCTL[WDEN] to 0 to disable watch dog */
+ tmp = in8(PIXIS_BASE + PIXIS_VCTL);
+ tmp &= ~0x08;
+ out8(PIXIS_BASE + PIXIS_VCTL, tmp);
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ diswd, 1, 0, pixis_disable_watchdog_cmd,
+ "diswd - Disable watchdog timer \n",
+ NULL);
+
+/*
+ * This function takes the non-integral cpu:mpx pll ratio
+ * and converts it to an integer that can be used to assign
+ * FPGA register values.
+ * input: strptr i.e. argv[2]
+ */
+
+static ulong strfractoint(uchar *strptr)
+{
+ int i, j, retval;
+ int mulconst;
+ int intarr_len = 0, decarr_len = 0, no_dec = 0;
+ ulong intval = 0, decval = 0;
+ uchar intarr[3], decarr[3];
+
+ /* Assign the integer part to intarr[]
+ * If there is no decimal point i.e.
+ * if the ratio is an integral value
+ * simply create the intarr.
+ */
+ i = 0;
+ while (strptr[i] != 46) {
+ if (strptr[i] == 0) {
+ no_dec = 1;
+ break;
+ }
+ intarr[i] = strptr[i];
+ i++;
+ }
+
+ /* Assign length of integer part to intarr_len. */
+ intarr_len = i;
+ intarr[i] = '\0';
+
+ if (no_dec) {
+ /* Currently needed only for single digit corepll ratios */
+ mulconst = 10;
+ decval = 0;
+ } else {
+ j = 0;
+ i++; /* Skipping the decimal point */
+ while ((strptr[i] > 47) && (strptr[i] < 58)) {
+ decarr[j] = strptr[i];
+ i++;
+ j++;
+ }
+
+ decarr_len = j;
+ decarr[j] = '\0';
+
+ mulconst = 1;
+ for (i = 0; i < decarr_len; i++)
+ mulconst *= 10;
+ decval = simple_strtoul(decarr, NULL, 10);
+ }
+
+ intval = simple_strtoul(intarr, NULL, 10);
+ intval = intval * mulconst;
+
+ retval = intval + decval;
+
+ return retval;
+}
+
+
+int
+pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong val;
+ ulong corepll;
+
+ /*
+ * No args is a simple reset request.
+ */
+ if (argc <= 1) {
+ pixis_reset();
+ /* not reached */
+ }
+
+ if (strcmp(argv[1], "cf") == 0) {
+
+ /*
+ * Reset with frequency changed:
+ * cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
+ */
+ if (argc < 5) {
+ puts(cmdtp->usage);
+ return 1;
+ }
+
+ read_from_px_regs(0);
+
+ val = set_px_sysclk(simple_strtoul(argv[2], NULL, 10));
+
+ corepll = strfractoint(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;
+ }
+
+ 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(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;
+ }
+
+ 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);
+ return 1;
+ }
+
+ } else {
+ puts(cmdtp->usage);
+ return 1;
+ }
+
+ 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\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"
+ );
diff --git a/board/mpc8641hpcn/pixis.h b/board/freescale/common/pixis.h
similarity index 90%
rename from board/mpc8641hpcn/pixis.h
rename to board/freescale/common/pixis.h
index cd9a45d..ff62a62 100644
--- a/board/mpc8641hpcn/pixis.h
+++ b/board/freescale/common/pixis.h
@@ -20,6 +20,7 @@
* MA 02111-1307 USA
*/
+extern void pixis_reset(void);
extern int set_px_sysclk(ulong sysclk);
extern int set_px_mpxpll(ulong mpxpll);
extern int set_px_corepll(ulong corepll);
@@ -28,6 +29,3 @@ extern void read_from_px_regs_altbank(int set);
extern void set_altbank(void);
extern void set_px_go(void);
extern void set_px_go_with_watchdog(void);
-extern int disable_watchdog(cmd_tbl_t *cmdtp,
- int flag, int argc, char *argv[]);
-extern ulong strfractoint(uchar *strptr);
diff --git a/board/mpc8641hpcn/Makefile b/board/mpc8641hpcn/Makefile
index 4b68c36..9625211 100644
--- a/board/mpc8641hpcn/Makefile
+++ b/board/mpc8641hpcn/Makefile
@@ -25,7 +25,9 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o pixis.o sys_eeprom.o
+COBJS := $(BOARD).o sys_eeprom.o \
+ ../freescale/common/pixis.o
+
SOBJS := init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/mpc8641hpcn/mpc8641hpcn.c b/board/mpc8641hpcn/mpc8641hpcn.c
index b2cf4a9..7d7e2af 100644
--- a/board/mpc8641hpcn/mpc8641hpcn.c
+++ b/board/mpc8641hpcn/mpc8641hpcn.c
@@ -1,9 +1,5 @@
/*
- * Copyright 2004 Freescale Semiconductor.
- * Jeff Brown
- * Srikanth Srinivasan (srikanth.srinivasan at freescale.com)
- *
- * (C) Copyright 2002 Scott McNutt <smcnutt at artesyncp.com>
+ * Copyright 2006, 2007 Freescale Semiconductor.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -25,18 +21,18 @@
*/
#include <common.h>
-#include <command.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/immap_86xx.h>
#include <spd.h>
+#include <asm/io.h>
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
extern void ft_cpu_setup(void *blob, bd_t *bd);
#endif
-#include "pixis.h"
+#include "../freescale/common/pixis.h"
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
extern void ddr_enable_ecc(unsigned int dram_size);
@@ -258,109 +254,6 @@ ft_board_setup(void *blob, bd_t *bd)
#endif
-void
-mpc8641_reset_board(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
-{
- char cmd;
- ulong val;
- ulong corepll;
-
- /*
- * No args is a simple reset request.
- */
- if (argc <= 1) {
- out8(PIXIS_BASE + PIXIS_RST, 0);
- /* not reached */
- }
-
- cmd = argv[1][1];
- switch (cmd) {
- case 'f': /* reset with frequency changed */
- if (argc < 5)
- goto my_usage;
- read_from_px_regs(0);
-
- val = set_px_sysclk(simple_strtoul(argv[2], NULL, 10));
-
- corepll = strfractoint(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 VSPEED0, VSPEED1, VCLKH, and VCLKL ....\n");
- set_px_go();
- } else
- goto my_usage;
-
- while (1) ; /* Not reached */
-
- case 'l':
- if (argv[2][1] == 'f') {
- read_from_px_regs(0);
- read_from_px_regs_altbank(0);
- /* reset with frequency changed */
- val = set_px_sysclk(simple_strtoul(argv[3], NULL, 10));
-
- corepll = strfractoint(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 and resetting board with values from VSPEED0, VSPEED1, VCLKH, and VCLKL to boot from the other bank ....\n");
- set_px_go_with_watchdog();
- } else
- goto my_usage;
-
- while (1) ; /* Not reached */
-
- } else if (argv[2][1] == 'd') {
- /*
- * Reset from alternate bank without changing
- * frequencies but with watchdog timer enabled.
- */
- 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 and resetting board to boot from the other bank....\n");
- set_px_go_with_watchdog();
- while (1) ; /* Not reached */
-
- } else {
- /*
- * Reset from next bank without changing
- * frequency and without watchdog timer enabled.
- */
- read_from_px_regs(0);
- read_from_px_regs_altbank(0);
- if (argc > 2)
- goto my_usage;
- 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();
- }
-
- default:
- goto my_usage;
- }
-
-my_usage:
- puts("\nUsage: reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n");
- puts(" reset altbank [cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>]\n");
- puts(" reset altbank [wd]\n");
- puts("For example: reset cf 40 2.5 10\n");
- puts("See MPC8641HPCN Design Workbook for valid values of command line parameters.\n");
-}
-
-
/*
* get_board_sys_clk
* Reads the FPGA on board for CONFIG_SYS_CLK_FREQ
diff --git a/board/mpc8641hpcn/pixis.c b/board/mpc8641hpcn/pixis.c
deleted file mode 100644
index 964a17c..0000000
--- a/board/mpc8641hpcn/pixis.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * Copyright 2006 Freescale Semiconductor
- * Jeff Brown
- * Srikanth Srinivasan (srikanth.srinivasan at freescale.com)
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <watchdog.h>
-#include <command.h>
-#include <asm/cache.h>
-#include <mpc86xx.h>
-
-#include "pixis.h"
-
-
-/*
- * Per table 27, page 58 of MPC8641HPCN spec.
- */
-int set_px_sysclk(ulong sysclk)
-{
- u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux;
-
- switch (sysclk) {
- case 33:
- sysclk_s = 0x04;
- sysclk_r = 0x04;
- sysclk_v = 0x07;
- sysclk_aux = 0x00;
- break;
- case 40:
- sysclk_s = 0x01;
- sysclk_r = 0x1F;
- sysclk_v = 0x20;
- sysclk_aux = 0x01;
- break;
- case 50:
- sysclk_s = 0x01;
- sysclk_r = 0x1F;
- sysclk_v = 0x2A;
- sysclk_aux = 0x02;
- break;
- case 66:
- sysclk_s = 0x01;
- sysclk_r = 0x04;
- sysclk_v = 0x04;
- sysclk_aux = 0x03;
- break;
- case 83:
- sysclk_s = 0x01;
- sysclk_r = 0x1F;
- sysclk_v = 0x4B;
- sysclk_aux = 0x04;
- break;
- case 100:
- sysclk_s = 0x01;
- sysclk_r = 0x1F;
- sysclk_v = 0x5C;
- sysclk_aux = 0x05;
- break;
- case 134:
- sysclk_s = 0x06;
- sysclk_r = 0x1F;
- sysclk_v = 0x3B;
- sysclk_aux = 0x06;
- break;
- case 166:
- sysclk_s = 0x06;
- sysclk_r = 0x1F;
- sysclk_v = 0x4B;
- sysclk_aux = 0x07;
- break;
- default:
- printf("Unsupported SYSCLK frequency.\n");
- return 0;
- }
-
- vclkh = (sysclk_s << 5) | sysclk_r;
- vclkl = sysclk_v;
-
- out8(PIXIS_BASE + PIXIS_VCLKH, vclkh);
- out8(PIXIS_BASE + PIXIS_VCLKL, vclkl);
-
- out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux);
-
- return 1;
-}
-
-
-int set_px_mpxpll(ulong mpxpll)
-{
- u8 tmp;
- u8 val;
-
- switch (mpxpll) {
- case 2:
- case 4:
- case 6:
- case 8:
- case 10:
- case 12:
- case 14:
- case 16:
- val = (u8) mpxpll;
- break;
- default:
- printf("Unsupported MPXPLL ratio.\n");
- return 0;
- }
-
- tmp = in8(PIXIS_BASE + PIXIS_VSPEED1);
- tmp = (tmp & 0xF0) | (val & 0x0F);
- out8(PIXIS_BASE + PIXIS_VSPEED1, tmp);
-
- return 1;
-}
-
-
-int set_px_corepll(ulong corepll)
-{
- u8 tmp;
- u8 val;
-
- switch ((int)corepll) {
- case 20:
- val = 0x08;
- break;
- case 25:
- val = 0x0C;
- break;
- case 30:
- val = 0x10;
- break;
- case 35:
- val = 0x1C;
- break;
- case 40:
- val = 0x14;
- break;
- case 45:
- val = 0x0E;
- break;
- default:
- printf("Unsupported COREPLL ratio.\n");
- return 0;
- }
-
- tmp = in8(PIXIS_BASE + PIXIS_VSPEED0);
- tmp = (tmp & 0xE0) | (val & 0x1F);
- out8(PIXIS_BASE + PIXIS_VSPEED0, tmp);
-
- return 1;
-}
-
-
-void read_from_px_regs(int set)
-{
- u8 mask = 0x1C;
- u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0);
-
- if (set)
- tmp = tmp | mask;
- else
- tmp = tmp & ~mask;
- out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp);
-}
-
-
-void read_from_px_regs_altbank(int set)
-{
- u8 mask = 0x04;
- u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1);
-
- if (set)
- tmp = tmp | mask;
- else
- tmp = tmp & ~mask;
- out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp);
-}
-
-
-void set_altbank(void)
-{
- u8 tmp;
-
- tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
- tmp ^= 0x40;
-
- out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
-}
-
-
-void set_px_go(void)
-{
- u8 tmp;
-
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp | 0x01;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-}
-
-
-void set_px_go_with_watchdog(void)
-{
- u8 tmp;
-
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp | 0x09;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-}
-
-
-int disable_watchdog(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- u8 tmp;
-
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp = tmp & 0x1E;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-
- /* setting VCTL[WDEN] to 0 to disable watch dog */
- tmp = in8(PIXIS_BASE + PIXIS_VCTL);
- tmp &= ~0x08;
- out8(PIXIS_BASE + PIXIS_VCTL, tmp);
-
- return 0;
-}
-
-U_BOOT_CMD(
- diswd, 1, 0, disable_watchdog,
- "diswd - Disable watchdog timer \n",
- NULL);
-
-/*
- * This function takes the non-integral cpu:mpx pll ratio
- * and converts it to an integer that can be used to assign
- * FPGA register values.
- * input: strptr i.e. argv[2]
- */
-
-ulong strfractoint(uchar *strptr)
-{
- int i, j, retval;
- int mulconst;
- int intarr_len = 0, decarr_len = 0, no_dec = 0;
- ulong intval = 0, decval = 0;
- uchar intarr[3], decarr[3];
-
- /* Assign the integer part to intarr[]
- * If there is no decimal point i.e.
- * if the ratio is an integral value
- * simply create the intarr.
- */
- i = 0;
- while (strptr[i] != 46) {
- if (strptr[i] == 0) {
- no_dec = 1;
- break;
- }
- intarr[i] = strptr[i];
- i++;
- }
-
- /* Assign length of integer part to intarr_len. */
- intarr_len = i;
- intarr[i] = '\0';
-
- if (no_dec) {
- /* Currently needed only for single digit corepll ratios */
- mulconst = 10;
- decval = 0;
- } else {
- j = 0;
- i++; /* Skipping the decimal point */
- while ((strptr[i] > 47) && (strptr[i] < 58)) {
- decarr[j] = strptr[i];
- i++;
- j++;
- }
-
- decarr_len = j;
- decarr[j] = '\0';
-
- mulconst = 1;
- for (i = 0; i < decarr_len; i++)
- mulconst *= 10;
- decval = simple_strtoul(decarr, NULL, 10);
- }
-
- intval = simple_strtoul(intarr, NULL, 10);
- intval = intval * mulconst;
-
- retval = intval + decval;
-
- return retval;
-}
diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c
index 551b243..84f5bef 100644
--- a/cpu/mpc86xx/cpu.c
+++ b/cpu/mpc86xx/cpu.c
@@ -32,12 +32,6 @@
#include <ft_build.h>
#endif
-#ifdef CONFIG_MPC8641HPCN
-extern void mpc8641_reset_board(cmd_tbl_t *cmdtp, int flag,
- int argc, char *argv[]);
-#endif
-
-
int
checkcpu(void)
{
@@ -185,7 +179,7 @@ do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
#else /* CONFIG_MPC8641HPCN */
- mpc8641_reset_board(cmdtp, flag, argc, argv);
+ out8(PIXIS_BASE + PIXIS_RST, 0);
#endif /* !CONFIG_MPC8641HPCN */
diff --git a/doc/README.mpc8641hpcn b/doc/README.mpc8641hpcn
index 4a650ce..3b88f8b 100644
--- a/doc/README.mpc8641hpcn
+++ b/doc/README.mpc8641hpcn
@@ -121,3 +121,37 @@ To Flash U-boot into the alternative bank (0xFF800000 - 0xFFBFFFFF):
0xe300_0000 0xe3ff_ffff PCI2/PEX2 IO 16M
0xfe00_0000 0xfeff_ffff Flash(alternate)16M
0xff00_0000 0xffff_ffff Flash(boot bank)16M
+
+5. pixis_reset command
+--------------------
+A new command, "pixis_reset", is introduced to reset mpc8641hpcn board
+using the FPGA sequencer. When the board restarts, it has the option
+of using either the current or alternate flash bank as the boot
+image, with or without the watchdog timer enabled, and finally with
+or without frequency changes.
+
+Usage is;
+
+ pixis_reset
+ pixis_reset altbank
+ pixis_reset altbank wd
+ pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
+ pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
+
+Examples;
+
+ /* reset to current bank, like "reset" command */
+ pixis_reset
+
+ /* reset board but use the to alternate flash bank */
+ pixis_reset altbank
+
+ /* reset board, use alternate flash bank with watchdog timer enabled*/
+ pixis_reset altbank wd
+
+ /* reset board to alternate bank with frequency changed.
+ * 40 is SYSCLK, 2.5 is COREPLL ratio, 10 is MPXPLL ratio
+ */
+ pixis-reset altbank cf 40 2.5 10
+
+Valid clock choices are in the 8641 Reference Manuals.
--
1.5.0.3
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