diff options
Diffstat (limited to 'board/freescale/common/qixis.c')
| -rw-r--r-- | board/freescale/common/qixis.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/board/freescale/common/qixis.c b/board/freescale/common/qixis.c new file mode 100644 index 0000000..6cd7e51 --- /dev/null +++ b/board/freescale/common/qixis.c @@ -0,0 +1,151 @@ +/* + * Copyright 2011 Freescale Semiconductor + * Author: Shengzhou Liu <Shengzhou.Liu@freescale.com> + * + * 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 file provides support for the QIXIS of some Freescale reference boards. + * + */ + +#include <common.h> +#include <command.h> +#include <asm/io.h> +#include "qixis.h" + +u8 qixis_read(unsigned int reg) +{ + void *p = (void *)QIXIS_BASE; + + return in_8(p + reg); +} + +void qixis_write(unsigned int reg, u8 value) +{ + void *p = (void *)QIXIS_BASE; + + out_8(p + reg, value); +} + +void qixis_reset(void) +{ + QIXIS_WRITE(rst_ctl, 0x83); +} + +void qixis_bank_reset(void) +{ + QIXIS_WRITE(rcfg_ctl, 0x20); + QIXIS_WRITE(rcfg_ctl, 0x21); +} + +/* Set the boot bank to the power-on default bank0 */ +void clear_altbank(void) +{ + u8 reg; + + reg = QIXIS_READ(brdcfg[0]); + reg = reg & ~QIXIS_LBMAP_MASK; + QIXIS_WRITE(brdcfg[0], reg); +} + +/* Set the boot bank to the alternate bank */ +void set_altbank(void) +{ + u8 reg; + + reg = QIXIS_READ(brdcfg[0]); + reg = (reg & ~QIXIS_LBMAP_MASK) | QIXIS_LBMAP_ALTBANK; + QIXIS_WRITE(brdcfg[0], reg); +} + +#ifdef DEBUG +static void qixis_dump_regs(void) +{ + int i; + + printf("id = %02x\n", QIXIS_READ(id)); + printf("arch = %02x\n", QIXIS_READ(arch)); + printf("scver = %02x\n", QIXIS_READ(scver)); + printf("model = %02x\n", QIXIS_READ(model)); + printf("rst_ctl = %02x\n", QIXIS_READ(rst_ctl)); + printf("aux = %02x\n", QIXIS_READ(aux)); + for (i = 0; i < 16; i++) + printf("brdcfg%02d = %02x\n", i, QIXIS_READ(brdcfg[i])); + for (i = 0; i < 16; i++) + printf("dutcfg%02d = %02x\n", i, QIXIS_READ(dutcfg[i])); + printf("sclk = %02x%02x%02x\n", QIXIS_READ(sclk[0]), + QIXIS_READ(sclk[1]), QIXIS_READ(sclk[2])); + printf("dclk = %02x%02x%02x\n", QIXIS_READ(dclk[0]), + QIXIS_READ(dclk[1]), QIXIS_READ(dclk[2])); + printf("aux = %02x\n", QIXIS_READ(aux)); + printf("watch = %02x\n", QIXIS_READ(watch)); + printf("ctl_sys = %02x\n", QIXIS_READ(ctl_sys)); + printf("rcw_ctl = %02x\n", QIXIS_READ(rcw_ctl)); + printf("present = %02x\n", QIXIS_READ(present)); + printf("clk_spd = %02x\n", QIXIS_READ(clk_spd)); + printf("stat_dut = %02x\n", QIXIS_READ(stat_dut)); + printf("stat_sys = %02x\n", QIXIS_READ(stat_sys)); + printf("stat_alrm = %02x\n", QIXIS_READ(stat_alrm)); + printf("ctl_sys2 = %02x\n", QIXIS_READ(ctl_sys2)); +} +#endif + +int qixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int i; + + if (argc <= 1) { + clear_altbank(); + qixis_reset(); + } else if (strcmp(argv[1], "altbank") == 0) { + set_altbank(); + qixis_bank_reset(); + } else if (strcmp(argv[1], "watchdog") == 0) { + static char *period[9] = {"2s", "4s", "8s", "16s", "32s", + "1min", "2min", "4min", "8min"}; + u8 rcfg = QIXIS_READ(rcfg_ctl); + + if (argv[2] == NULL) { + printf("qixis watchdog <watchdog_period>\n"); + return 0; + } + for (i = 0; i < ARRAY_SIZE(period); i++) { + if (strcmp(argv[2], period[i]) == 0) { + /* disable watchdog */ + QIXIS_WRITE(rcfg_ctl, rcfg & ~0x08); + QIXIS_WRITE(watch, ((i<<2) - 1)); + QIXIS_WRITE(rcfg_ctl, rcfg); + return 0; + } + } + } + +#ifdef DEBUG + else if (strcmp(argv[1], "dump") == 0) { + qixis_dump_regs(); + return 0; + } +#endif + + else { + printf("Invalid option: %s\n", argv[1]); + return 1; + } + + return 0; +} + +U_BOOT_CMD( + qixis_reset, CONFIG_SYS_MAXARGS, 1, qixis_reset_cmd, + "Reset the board using the FPGA sequencer", + "- hard reset to default bank\n" + "qixis_reset altbank - reset to alternate bank\n" + "qixis watchdog <watchdog_period> - set the watchdog period\n" + " period: 1s 2s 4s 8s 16s 32s 1min 2min 4min 8min\n" +#ifdef DEBUG + "qixis_reset dump - display the QIXIS registers\n" +#endif + ); |