diff options
Diffstat (limited to 'board/freescale/t4rdb')
| -rw-r--r-- | board/freescale/t4rdb/Makefile | 1 | ||||
| -rw-r--r-- | board/freescale/t4rdb/cpld.c | 136 | ||||
| -rw-r--r-- | board/freescale/t4rdb/cpld.h | 49 | ||||
| -rw-r--r-- | board/freescale/t4rdb/law.c | 3 | ||||
| -rw-r--r-- | board/freescale/t4rdb/t4240rdb.c | 12 | ||||
| -rw-r--r-- | board/freescale/t4rdb/tlb.c | 5 |
6 files changed, 206 insertions, 0 deletions
diff --git a/board/freescale/t4rdb/Makefile b/board/freescale/t4rdb/Makefile index f7f7fc0..3886e3d 100644 --- a/board/freescale/t4rdb/Makefile +++ b/board/freescale/t4rdb/Makefile @@ -5,6 +5,7 @@ # obj-$(CONFIG_T4240RDB) += t4240rdb.o +obj-y += cpld.o obj-y += ddr.o obj-y += eth.o obj-$(CONFIG_PCI) += pci.o diff --git a/board/freescale/t4rdb/cpld.c b/board/freescale/t4rdb/cpld.c new file mode 100644 index 0000000..d5f3812 --- /dev/null +++ b/board/freescale/t4rdb/cpld.c @@ -0,0 +1,136 @@ +/** + * Copyright 2014 Freescale Semiconductor + * + * Author: Chunhe Lan <Chunhe.Lan@freescale.com> + * + * 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: + * + * CONFIG_SYS_CPLD_BASE - The virtual address of the base of the + * CPLD register map + * + */ + +#include <common.h> +#include <command.h> +#include <asm/io.h> + +#include "cpld.h" + +u8 cpld_read(unsigned int reg) +{ + void *p = (void *)CONFIG_SYS_CPLD_BASE; + + return in_8(p + reg); +} + +void cpld_write(unsigned int reg, u8 value) +{ + void *p = (void *)CONFIG_SYS_CPLD_BASE; + + out_8(p + reg, value); +} + +/** + * Set the boot bank to the alternate bank + */ +void cpld_set_altbank(void) +{ + u8 val, curbank, altbank, override; + + val = CPLD_READ(vbank); + curbank = val & CPLD_BANK_SEL_MASK; + + switch (curbank) { + case CPLD_SELECT_BANK0: + altbank = CPLD_SELECT_BANK4; + CPLD_WRITE(vbank, altbank); + override = CPLD_READ(software_on); + CPLD_WRITE(software_on, override | CPLD_BANK_SEL_EN); + CPLD_WRITE(sys_reset, CPLD_SYSTEM_RESET); + break; + case CPLD_SELECT_BANK4: + altbank = CPLD_SELECT_BANK0; + CPLD_WRITE(vbank, altbank); + override = CPLD_READ(software_on); + CPLD_WRITE(software_on, override | CPLD_BANK_SEL_EN); + CPLD_WRITE(sys_reset, CPLD_SYSTEM_RESET); + break; + default: + printf("CPLD Altbank Fail: Invalid value!\n"); + return; + } +} + +/** + * Set the boot bank to the default bank + */ +void cpld_set_defbank(void) +{ + u8 val; + + val = CPLD_DEFAULT_BANK; + + CPLD_WRITE(global_reset, val); +} + +#ifdef DEBUG +static void cpld_dump_regs(void) +{ + printf("chip_id1 = 0x%02x\n", CPLD_READ(chip_id1)); + printf("chip_id2 = 0x%02x\n", CPLD_READ(chip_id2)); + printf("sw_maj_ver = 0x%02x\n", CPLD_READ(sw_maj_ver)); + printf("sw_min_ver = 0x%02x\n", CPLD_READ(sw_min_ver)); + printf("hw_ver = 0x%02x\n", CPLD_READ(hw_ver)); + printf("software_on = 0x%02x\n", CPLD_READ(software_on)); + printf("cfg_rcw_src = 0x%02x\n", CPLD_READ(cfg_rcw_src)); + printf("res0 = 0x%02x\n", CPLD_READ(res0)); + printf("vbank = 0x%02x\n", CPLD_READ(vbank)); + printf("sw1_sysclk = 0x%02x\n", CPLD_READ(sw1_sysclk)); + printf("sw2_status = 0x%02x\n", CPLD_READ(sw2_status)); + printf("sw3_status = 0x%02x\n", CPLD_READ(sw3_status)); + printf("sw4_status = 0x%02x\n", CPLD_READ(sw4_status)); + printf("sys_reset = 0x%02x\n", CPLD_READ(sys_reset)); + printf("global_reset = 0x%02x\n", CPLD_READ(global_reset)); + printf("res1 = 0x%02x\n", CPLD_READ(res1)); + putc('\n'); +} +#endif + +#ifndef CONFIG_SPL_BUILD +int do_cpld(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(); +#ifdef DEBUG + } else if (strcmp(argv[1], "dump") == 0) { + cpld_dump_regs(); +#endif + } else + rc = cmd_usage(cmdtp); + + return rc; +} + +U_BOOT_CMD( + cpld, CONFIG_SYS_MAXARGS, 1, do_cpld, + "Reset the board or alternate bank", + "reset - reset to default bank\n" + "cpld reset altbank - reset to alternate bank\n" +#ifdef DEBUG + "cpld dump - display the CPLD registers\n" +#endif + ); +#endif diff --git a/board/freescale/t4rdb/cpld.h b/board/freescale/t4rdb/cpld.h new file mode 100644 index 0000000..0180082 --- /dev/null +++ b/board/freescale/t4rdb/cpld.h @@ -0,0 +1,49 @@ +/** + * Copyright 2014 Freescale Semiconductor + * + * Author: Chunhe Lan <Chunhe.Lan@freescale.com> + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file provides support for the ngPIXIS, a board-specific FPGA used on + * some Freescale reference boards. + */ + +/* + * CPLD register set. Feel free to add board-specific #ifdefs where necessary. + */ +struct cpld_data { + u8 chip_id1; /* 0x00 - CPLD Chip ID1 Register */ + u8 chip_id2; /* 0x01 - CPLD Chip ID2 Register */ + u8 sw_maj_ver; /* 0x02 - CPLD Code Major Version Register */ + u8 sw_min_ver; /* 0x03 - CPLD Code Minor Version Register */ + u8 hw_ver; /* 0x04 - PCBA Version Register */ + u8 software_on; /* 0x05 - Override Physical Switch Enable Register */ + u8 cfg_rcw_src; /* 0x06 - RCW Source Location Control Register */ + u8 res0; /* 0x07 - not used */ + u8 vbank; /* 0x08 - Flash Bank Selection Control Register */ + u8 sw1_sysclk; /* 0x09 - SW1 Status Read Back Register */ + u8 sw2_status; /* 0x0a - SW2 Status Read Back Register */ + u8 sw3_status; /* 0x0b - SW3 Status Read Back Register */ + u8 sw4_status; /* 0x0c - SW4 Status Read Back Register */ + u8 sys_reset; /* 0x0d - Reset System With Reserving Registers Value*/ + u8 global_reset;/* 0x0e - Reset System With Default Registers Value */ + u8 res1; /* 0x0f - not used */ +}; + +#define CPLD_BANK_SEL_MASK 0x07 +#define CPLD_BANK_SEL_EN 0x04 +#define CPLD_SYSTEM_RESET 0x01 +#define CPLD_SELECT_BANK0 0x00 +#define CPLD_SELECT_BANK4 0x04 +#define CPLD_DEFAULT_BANK 0x01 + +/* Pointer to the CPLD register set */ + +u8 cpld_read(unsigned int reg); +void cpld_write(unsigned int reg, u8 value); + +#define CPLD_READ(reg) cpld_read(offsetof(struct cpld_data, reg)) +#define CPLD_WRITE(reg, value) \ + cpld_write(offsetof(struct cpld_data, reg), value) + diff --git a/board/freescale/t4rdb/law.c b/board/freescale/t4rdb/law.c index 1f58768..39818fc 100644 --- a/board/freescale/t4rdb/law.c +++ b/board/freescale/t4rdb/law.c @@ -16,6 +16,9 @@ struct law_entry law_table[] = { #ifdef CONFIG_SYS_QMAN_MEM_PHYS SET_LAW(CONFIG_SYS_QMAN_MEM_PHYS, LAW_SIZE_32M, LAW_TRGT_IF_QMAN), #endif +#ifdef CONFIG_SYS_CPLD_BASE_PHYS + SET_LAW(CONFIG_SYS_CPLD_BASE_PHYS, LAW_SIZE_4K, LAW_TRGT_IF_IFC), +#endif #ifdef CONFIG_SYS_DCSRBAR_PHYS /* Limit DCSR to 32M to access NPC Trace Buffer */ SET_LAW(CONFIG_SYS_DCSRBAR_PHYS, LAW_SIZE_32M, LAW_TRGT_IF_DCSR), diff --git a/board/freescale/t4rdb/t4240rdb.c b/board/freescale/t4rdb/t4240rdb.c index afef7e9..2ff77b8 100644 --- a/board/freescale/t4rdb/t4240rdb.c +++ b/board/freescale/t4rdb/t4240rdb.c @@ -20,14 +20,26 @@ #include <fm_eth.h> #include "t4rdb.h" +#include "cpld.h" DECLARE_GLOBAL_DATA_PTR; int checkboard(void) { struct cpu_type *cpu = gd->arch.cpu; + u8 sw; printf("Board: %sRDB, ", cpu->name); + printf("Board rev: 0x%02x CPLD ver: 0x%02x%02x, ", + CPLD_READ(hw_ver), CPLD_READ(sw_maj_ver), CPLD_READ(sw_min_ver)); + + sw = CPLD_READ(vbank); + sw = sw & CPLD_BANK_SEL_MASK; + + if (sw <= 7) + printf("vBank: %d\n", sw); + else + printf("Unsupported Bank=%x\n", sw); puts("SERDES Reference Clocks:\n"); printf(" SERDES1=100MHz SERDES2=156.25MHz\n" diff --git a/board/freescale/t4rdb/tlb.c b/board/freescale/t4rdb/tlb.c index 4b50bcd..474301e 100644 --- a/board/freescale/t4rdb/tlb.c +++ b/board/freescale/t4rdb/tlb.c @@ -106,6 +106,11 @@ struct fsl_e_tlb_entry tlb_table[] = { MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 0, 16, BOOKE_PAGESZ_64K, 1), #endif +#ifdef CONFIG_SYS_CPLD_BASE + SET_TLB_ENTRY(1, CONFIG_SYS_CPLD_BASE, CONFIG_SYS_CPLD_BASE_PHYS, + MAS3_SW|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, + 0, 17, BOOKE_PAGESZ_4K, 1), +#endif }; int num_tlb_entries = ARRAY_SIZE(tlb_table); |