diff options
Diffstat (limited to 'arch/arm/mach-uniphier/support_card.c')
| -rw-r--r-- | arch/arm/mach-uniphier/support_card.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/support_card.c b/arch/arm/mach-uniphier/support_card.c new file mode 100644 index 0000000000..443224c451 --- /dev/null +++ b/arch/arm/mach-uniphier/support_card.c @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2012-2014 Panasonic Corporation + * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/board.h> + +#if defined(CONFIG_PFC_MICRO_SUPPORT_CARD) + +#define PFC_MICRO_SUPPORT_CARD_RESET \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x000D0034) +#define PFC_MICRO_SUPPORT_CARD_REVISION \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x000D00E0) +/* + * 0: reset deassert, 1: reset + * + * bit[0]: LAN, I2C, LED + * bit[1]: UART + */ +void support_card_reset_deassert(void) +{ + writel(0, PFC_MICRO_SUPPORT_CARD_RESET); +} + +void support_card_reset(void) +{ + writel(3, PFC_MICRO_SUPPORT_CARD_RESET); +} + +static int support_card_show_revision(void) +{ + u32 revision; + + revision = readl(PFC_MICRO_SUPPORT_CARD_REVISION); + printf("(PFC CPLD version %d.%d)\n", revision >> 4, revision & 0xf); + return 0; +} +#endif + +#if defined(CONFIG_DCC_MICRO_SUPPORT_CARD) + +#define DCC_MICRO_SUPPORT_CARD_RESET_LAN \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x00401300) +#define DCC_MICRO_SUPPORT_CARD_RESET_UART \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x00401304) +#define DCC_MICRO_SUPPORT_CARD_RESET_I2C \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x00401308) +#define DCC_MICRO_SUPPORT_CARD_REVISION \ + ((CONFIG_SUPPORT_CARD_BASE) + 0x005000E0) + +void support_card_reset_deassert(void) +{ + writel(1, DCC_MICRO_SUPPORT_CARD_RESET_LAN); /* LAN and LED */ + writel(1, DCC_MICRO_SUPPORT_CARD_RESET_UART); /* UART */ + writel(1, DCC_MICRO_SUPPORT_CARD_RESET_I2C); /* I2C */ +} + +void support_card_reset(void) +{ + writel(0, DCC_MICRO_SUPPORT_CARD_RESET_LAN); /* LAN and LED */ + writel(0, DCC_MICRO_SUPPORT_CARD_RESET_UART); /* UART */ + writel(0, DCC_MICRO_SUPPORT_CARD_RESET_I2C); /* I2C */ +} + +static int support_card_show_revision(void) +{ + u32 revision; + + revision = readl(DCC_MICRO_SUPPORT_CARD_REVISION); + + if (revision >= 0x67) { + printf("(DCC CPLD version 3.%d.%d)\n", + revision >> 4, revision & 0xf); + return 0; + } else { + printf("(DCC CPLD unknown version)\n"); + return -1; + } +} +#endif + +int check_support_card(void) +{ + printf("SC: Micro Support Card "); + return support_card_show_revision(); +} + +void support_card_init(void) +{ + /* + * After power on, we need to keep the LAN controller in reset state + * for a while. (200 usec) + * Fortunatelly, enough wait time is already inserted in pll_init() + * function. So we do not have to wait here. + */ + support_card_reset_deassert(); +} + +#if defined(CONFIG_SMC911X) +#include <netdev.h> + +int board_eth_init(bd_t *bis) +{ + return smc911x_initialize(0, CONFIG_SMC911X_BASE); +} +#endif + +#if !defined(CONFIG_SYS_NO_FLASH) + +#include <mtd/cfi_flash.h> +#include <asm/arch/sbc-regs.h> + +struct memory_bank { + phys_addr_t base; + unsigned long size; +}; + +static int mem_is_flash(const struct memory_bank *mem) +{ + const int loop = 128; + u32 *scratch_addr; + u32 saved_value; + int ret = 1; + int i; + + /* just in case, use the tail of the memory bank */ + scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop, + sizeof(u32) * loop, MAP_NOCACHE); + + for (i = 0; i < loop; i++, scratch_addr++) { + saved_value = readl(scratch_addr); + writel(~saved_value, scratch_addr); + if (readl(scratch_addr) != saved_value) { + /* We assume no memory or SRAM here. */ + writel(saved_value, scratch_addr); + ret = 0; + break; + } + } + + unmap_physmem(scratch_addr, MAP_NOCACHE); + + return ret; +} + +#if defined(CONFIG_PFC_MICRO_SUPPORT_CARD) + /* {address, size} */ +static const struct memory_bank memory_banks_boot_swap_off[] = { + {0x02000000, 0x01f00000}, +}; + +static const struct memory_bank memory_banks_boot_swap_on[] = { + {0x00000000, 0x01f00000}, +}; +#endif + +#if defined(CONFIG_DCC_MICRO_SUPPORT_CARD) +static const struct memory_bank memory_banks_boot_swap_off[] = { + {0x04000000, 0x02000000}, +}; + +static const struct memory_bank memory_banks_boot_swap_on[] = { + {0x00000000, 0x02000000}, + {0x04000000, 0x02000000}, +}; +#endif + +static const struct memory_bank +*flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT]; + +phys_addr_t cfi_flash_bank_addr(int i) +{ + return flash_banks_list[i]->base; +} + +unsigned long cfi_flash_bank_size(int i) +{ + return flash_banks_list[i]->size; +} + +static void detect_num_flash_banks(void) +{ + const struct memory_bank *memory_bank, *end; + + cfi_flash_num_flash_banks = 0; + + if (boot_is_swapped()) { + memory_bank = memory_banks_boot_swap_on; + end = memory_bank + ARRAY_SIZE(memory_banks_boot_swap_on); + } else { + memory_bank = memory_banks_boot_swap_off; + end = memory_bank + ARRAY_SIZE(memory_banks_boot_swap_off); + } + + for (; memory_bank < end; memory_bank++) { + if (cfi_flash_num_flash_banks >= + CONFIG_SYS_MAX_FLASH_BANKS_DETECT) + break; + + if (mem_is_flash(memory_bank)) { + flash_banks_list[cfi_flash_num_flash_banks] = + memory_bank; + + debug("flash bank found: base = 0x%lx, size = 0x%lx\n", + memory_bank->base, memory_bank->size); + cfi_flash_num_flash_banks++; + } + } + + debug("number of flash banks: %d\n", cfi_flash_num_flash_banks); +} +#else /* ONFIG_SYS_NO_FLASH */ +void detect_num_flash_banks(void) +{ +}; +#endif /* ONFIG_SYS_NO_FLASH */ + +void support_card_late_init(void) +{ + detect_num_flash_banks(); +} |