2 * Copyright 2015 Freescale Semiconductor
4 * SPDX-License-Identifier: GPL-2.0+
6 * Freescale LS1043ARDB board-specific CPLD controlling supports.
14 u8 cpld_read(unsigned int reg)
16 void *p = (void *)CONFIG_SYS_CPLD_BASE;
21 void cpld_write(unsigned int reg, u8 value)
23 void *p = (void *)CONFIG_SYS_CPLD_BASE;
25 out_8(p + reg, value);
28 /* Set the boot bank to the alternate bank */
29 void cpld_set_altbank(void)
31 u8 reg4 = CPLD_READ(soft_mux_on);
32 u8 reg7 = CPLD_READ(vbank);
34 CPLD_WRITE(soft_mux_on, reg4 | CPLD_SW_MUX_BANK_SEL);
36 reg7 = (reg7 & ~CPLD_BANK_SEL_MASK) | CPLD_BANK_SEL_ALTBANK;
37 CPLD_WRITE(vbank, reg7);
39 CPLD_WRITE(system_rst, 1);
42 /* Set the boot bank to the default bank */
43 void cpld_set_defbank(void)
45 CPLD_WRITE(global_rst, 1);
48 void cpld_set_nand(void)
50 u16 reg = CPLD_CFG_RCW_SRC_NAND;
51 u8 reg5 = (u8)(reg >> 1);
52 u8 reg6 = (u8)(reg & 1);
56 CPLD_WRITE(soft_mux_on, 1);
58 CPLD_WRITE(cfg_rcw_src1, reg5);
59 CPLD_WRITE(cfg_rcw_src2, reg6);
61 CPLD_WRITE(system_rst, 1);
65 static void cpld_dump_regs(void)
67 printf("cpld_ver = %x\n", CPLD_READ(cpld_ver));
68 printf("cpld_ver_sub = %x\n", CPLD_READ(cpld_ver_sub));
69 printf("pcba_ver = %x\n", CPLD_READ(pcba_ver));
70 printf("soft_mux_on = %x\n", CPLD_READ(soft_mux_on));
71 printf("cfg_rcw_src1 = %x\n", CPLD_READ(cfg_rcw_src1));
72 printf("cfg_rcw_src2 = %x\n", CPLD_READ(cfg_rcw_src2));
73 printf("vbank = %x\n", CPLD_READ(vbank));
74 printf("sysclk_sel = %x\n", CPLD_READ(sysclk_sel));
75 printf("uart_sel = %x\n", CPLD_READ(uart_sel));
76 printf("sd1refclk_sel = %x\n", CPLD_READ(sd1refclk_sel));
77 printf("tdmclk_mux_sel = %x\n", CPLD_READ(tdmclk_mux_sel));
78 printf("sdhc_spics_sel = %x\n", CPLD_READ(sdhc_spics_sel));
79 printf("status_led = %x\n", CPLD_READ(status_led));
84 void cpld_rev_bit(unsigned char *value)
91 for (i = 1; i <= 7; i++) {
100 int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
105 return cmd_usage(cmdtp);
107 if (strcmp(argv[1], "reset") == 0) {
108 if (strcmp(argv[2], "altbank") == 0)
110 else if (strcmp(argv[2], "nand") == 0)
115 } else if (strcmp(argv[1], "dump") == 0) {
119 rc = cmd_usage(cmdtp);
126 cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
127 "Reset the board or alternate bank",
128 "reset: reset to default bank\n"
129 "cpld reset altbank: reset to alternate bank\n"
130 "cpld reset nand: reset to boot from NAND flash\n"
132 "cpld dump - display the CPLD registers\n"