X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Ffreescale%2Fp2041rdb%2Fcpld.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Ffreescale%2Fp2041rdb%2Fcpld.c;h=34901aa3c904228c2e5c68835e4936bb06b2eec7;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/board/freescale/p2041rdb/cpld.c b/qemu/roms/u-boot/board/freescale/p2041rdb/cpld.c new file mode 100644 index 000000000..34901aa3c --- /dev/null +++ b/qemu/roms/u-boot/board/freescale/p2041rdb/cpld.c @@ -0,0 +1,158 @@ +/** + * Copyright 2011 Freescale Semiconductor + * Author: Mingkai Hu + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file provides support for the board-specific CPLD used on some Freescale + * reference boards. + * + * The following macros need to be defined: + * + * CPLD_BASE - The virtual address of the base of the CPLD register map + */ + +#include +#include +#include + +#include "cpld.h" + +static u8 __cpld_read(unsigned int reg) +{ + void *p = (void *)CPLD_BASE; + + return in_8(p + reg); +} +u8 cpld_read(unsigned int reg) __attribute__((weak, alias("__cpld_read"))); + +static void __cpld_write(unsigned int reg, u8 value) +{ + void *p = (void *)CPLD_BASE; + + out_8(p + reg, value); +} +void cpld_write(unsigned int reg, u8 value) + __attribute__((weak, alias("__cpld_write"))); + +/* + * Reset the board. This honors the por_cfg registers. + */ +void __cpld_reset(void) +{ + CPLD_WRITE(system_rst, 1); +} +void cpld_reset(void) __attribute__((weak, alias("__cpld_reset"))); + +/** + * Set the boot bank to the alternate bank + */ +void __cpld_set_altbank(void) +{ + u8 reg5 = CPLD_READ(sw_ctl_on); + + CPLD_WRITE(sw_ctl_on, reg5 | CPLD_SWITCH_BANK_ENABLE); + CPLD_WRITE(fbank_sel, 1); + CPLD_WRITE(system_rst, 1); +} +void cpld_set_altbank(void) + __attribute__((weak, alias("__cpld_set_altbank"))); + +/** + * Set the boot bank to the default bank + */ +void __cpld_set_defbank(void) +{ + CPLD_WRITE(system_rst_default, 1); +} +void cpld_set_defbank(void) + __attribute__((weak, alias("__cpld_set_defbank"))); + +#ifdef DEBUG +static void cpld_dump_regs(void) +{ + printf("cpld_ver = 0x%02x\n", CPLD_READ(cpld_ver)); + printf("cpld_ver_sub = 0x%02x\n", CPLD_READ(cpld_ver_sub)); + printf("pcba_ver = 0x%02x\n", CPLD_READ(pcba_ver)); + printf("system_rst = 0x%02x\n", CPLD_READ(system_rst)); + printf("sw_ctl_on = 0x%02x\n", CPLD_READ(sw_ctl_on)); + printf("por_cfg = 0x%02x\n", CPLD_READ(por_cfg)); + printf("switch_strobe = 0x%02x\n", CPLD_READ(switch_strobe)); + printf("jtag_sel = 0x%02x\n", CPLD_READ(jtag_sel)); + printf("sdbank1_clk = 0x%02x\n", CPLD_READ(sdbank1_clk)); + printf("sdbank2_clk = 0x%02x\n", CPLD_READ(sdbank2_clk)); + printf("fbank_sel = 0x%02x\n", CPLD_READ(fbank_sel)); + printf("serdes_mux = 0x%02x\n", CPLD_READ(serdes_mux)); + printf("SW[2] = 0x%02x\n", in_8(&CPLD_SW(2))); + putc('\n'); +} +#endif + +int cpld_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int rc = 0; + + if (argc <= 1) + return cmd_usage(cmdtp); + + if (strcmp(argv[1], "reset") == 0) { + if (strcmp(argv[2], "altbank") == 0) + cpld_set_altbank(); + else + cpld_set_defbank(); + } else if (strcmp(argv[1], "lane_mux") == 0) { + u32 lane = simple_strtoul(argv[2], NULL, 16); + u8 val = (u8)simple_strtoul(argv[3], NULL, 16); + u8 reg = CPLD_READ(serdes_mux); + + switch (lane) { + case 0x6: + reg &= ~SERDES_MUX_LANE_6_MASK; + reg |= val << SERDES_MUX_LANE_6_SHIFT; + break; + case 0xa: + reg &= ~SERDES_MUX_LANE_A_MASK; + reg |= val << SERDES_MUX_LANE_A_SHIFT; + break; + case 0xc: + reg &= ~SERDES_MUX_LANE_C_MASK; + reg |= val << SERDES_MUX_LANE_C_SHIFT; + break; + case 0xd: + reg &= ~SERDES_MUX_LANE_D_MASK; + reg |= val << SERDES_MUX_LANE_D_SHIFT; + break; + default: + printf("Invalid value\n"); + break; + } + + CPLD_WRITE(serdes_mux, reg); +#ifdef DEBUG + } else if (strcmp(argv[1], "dump") == 0) { + cpld_dump_regs(); +#endif + } else + rc = cmd_usage(cmdtp); + + return rc; +} + +U_BOOT_CMD( + cpld_cmd, CONFIG_SYS_MAXARGS, 1, cpld_cmd, + "Reset the board or pin mulexing selection using the CPLD sequencer", + "reset - hard reset to default bank\n" + "cpld_cmd reset altbank - reset to alternate bank\n" + "cpld_cmd lane_mux - set multiplexed lane pin\n" + " lane 6: 0 -> slot1\n" + " 1 -> SGMII (Default)\n" + " lane a: 0 -> slot2\n" + " 1 -> AURORA (Default)\n" + " lane c: 0 -> slot2\n" + " 1 -> SATA0 (Default)\n" + " lane d: 0 -> slot2\n" + " 1 -> SATA1 (Default)\n" +#ifdef DEBUG + "cpld_cmd dump - display the CPLD registers\n" +#endif + );