diff options
Diffstat (limited to 'roms/u-boot/board/freescale/common/qixis.c')
| -rw-r--r-- | roms/u-boot/board/freescale/common/qixis.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/roms/u-boot/board/freescale/common/qixis.c b/roms/u-boot/board/freescale/common/qixis.c new file mode 100644 index 00000000..a49e3006 --- /dev/null +++ b/roms/u-boot/board/freescale/common/qixis.c @@ -0,0 +1,251 @@ +/* + * Copyright 2011 Freescale Semiconductor + * Author: Shengzhou Liu <Shengzhou.Liu@freescale.com> + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file provides support for the QIXIS of some Freescale reference boards. + */ + +#include <common.h> +#include <command.h> +#include <asm/io.h> +#include <linux/time.h> +#include <i2c.h> +#include "qixis.h" + +#ifdef CONFIG_SYS_I2C_FPGA_ADDR +u8 qixis_read_i2c(unsigned int reg) +{ + return i2c_reg_read(CONFIG_SYS_I2C_FPGA_ADDR, reg); +} + +void qixis_write_i2c(unsigned int reg, u8 value) +{ + u8 val = value; + i2c_reg_write(CONFIG_SYS_I2C_FPGA_ADDR, reg, val); +} +#endif + +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); +} + +u16 qixis_read_minor(void) +{ + u16 minor; + + /* this data is in little endian */ + QIXIS_WRITE(tagdata, 5); + minor = QIXIS_READ(tagdata); + QIXIS_WRITE(tagdata, 6); + minor += QIXIS_READ(tagdata) << 8; + + return minor; +} + +char *qixis_read_time(char *result) +{ + time_t time = 0; + int i; + + /* timestamp is in 32-bit big endian */ + for (i = 8; i <= 11; i++) { + QIXIS_WRITE(tagdata, i); + time = (time << 8) + QIXIS_READ(tagdata); + } + + return ctime_r(&time, result); +} + +char *qixis_read_tag(char *buf) +{ + int i; + char tag, *ptr = buf; + + for (i = 16; i <= 63; i++) { + QIXIS_WRITE(tagdata, i); + tag = QIXIS_READ(tagdata); + *(ptr++) = tag; + if (!tag) + break; + } + if (i > 63) + *ptr = '\0'; + + return buf; +} + +/* + * return the string of binary of u8 in the format of + * 1010 10_0. The masked bit is filled as underscore. + */ +const char *byte_to_binary_mask(u8 val, u8 mask, char *buf) +{ + char *ptr; + int i; + + ptr = buf; + for (i = 0x80; i > 0x08 ; i >>= 1, ptr++) + *ptr = (val & i) ? '1' : ((mask & i) ? '_' : '0'); + *(ptr++) = ' '; + for (i = 0x08; i > 0 ; i >>= 1, ptr++) + *ptr = (val & i) ? '1' : ((mask & i) ? '_' : '0'); + + *ptr = '\0'; + + return buf; +} + +#ifdef QIXIS_RST_FORCE_MEM +void board_assert_mem_reset(void) +{ + u8 rst; + + rst = QIXIS_READ(rst_frc[0]); + if (!(rst & QIXIS_RST_FORCE_MEM)) + QIXIS_WRITE(rst_frc[0], rst | QIXIS_RST_FORCE_MEM); +} + +void board_deassert_mem_reset(void) +{ + u8 rst; + + rst = QIXIS_READ(rst_frc[0]); + if (rst & QIXIS_RST_FORCE_MEM) + QIXIS_WRITE(rst_frc[0], rst & ~QIXIS_RST_FORCE_MEM); +} +#endif + +void qixis_reset(void) +{ + QIXIS_WRITE(rst_ctl, QIXIS_RST_CTL_RESET); +} + +void qixis_bank_reset(void) +{ + QIXIS_WRITE(rcfg_ctl, QIXIS_RCFG_CTL_RECONFIG_IDLE); + QIXIS_WRITE(rcfg_ctl, QIXIS_RCFG_CTL_RECONFIG_START); +} + +/* Set the boot bank to the power-on default bank */ +void clear_altbank(void) +{ + u8 reg; + + reg = QIXIS_READ(brdcfg[0]); + reg = (reg & ~QIXIS_LBMAP_MASK) | QIXIS_LBMAP_DFLTBANK; + 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); +} + +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("present2 = %02x\n", QIXIS_READ(present2)); + 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)); +} + +static void __qixis_dump_switch(void) +{ + puts("Reverse engineering switch is not implemented for this board\n"); +} + +void qixis_dump_switch(void) + __attribute__((weak, alias("__qixis_dump_switch"))); + +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 & ~QIXIS_RCFG_CTL_WATCHDOG_ENBLE); + QIXIS_WRITE(watch, ((i<<2) - 1)); + QIXIS_WRITE(rcfg_ctl, rcfg); + return 0; + } + } + } else if (strcmp(argv[1], "dump") == 0) { + qixis_dump_regs(); + return 0; + } else if (strcmp(argv[1], "switch") == 0) { + qixis_dump_switch(); + return 0; + } 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" + "qixis_reset dump - display the QIXIS registers\n" + "qixis_reset switch - display switch\n" + ); |