Add PIXIS FPGA support for MPC8641HPCN board.
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@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
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@freescale.com)
- *
- * (C) Copyright 2002 Scott McNutt <smcnutt@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 @@
#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