| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Thomas Horsten <thh@lasat.com> |
| * Copyright (C) 2000 LASAT Networks A/S. |
| * |
| * Routines specific to the LASAT boards |
| */ |
| #include <linux/types.h> |
| #include <linux/crc32.h> |
| #include <asm/lasat/lasat.h> |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/ctype.h> |
| #include <linux/mutex.h> |
| #include <asm/addrspace.h> |
| #include "at93c.h" |
| /* New model description table */ |
| #include "lasat_models.h" |
| |
| static DEFINE_MUTEX(lasat_eeprom_mutex); |
| |
| #define EEPROM_CRC(data, len) (~crc32(~0, data, len)) |
| |
| struct lasat_info lasat_board_info; |
| |
| int EEPROMRead(unsigned int pos, unsigned char *data, int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) |
| *data++ = at93c_read(pos++); |
| |
| return 0; |
| } |
| |
| int EEPROMWrite(unsigned int pos, unsigned char *data, int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) |
| at93c_write(pos++, *data++); |
| |
| return 0; |
| } |
| |
| static void init_flash_sizes(void) |
| { |
| unsigned long *lb = lasat_board_info.li_flashpart_base; |
| unsigned long *ls = lasat_board_info.li_flashpart_size; |
| int i; |
| |
| ls[LASAT_MTD_BOOTLOADER] = 0x40000; |
| ls[LASAT_MTD_SERVICE] = 0xC0000; |
| ls[LASAT_MTD_NORMAL] = 0x100000; |
| |
| if (!IS_LASAT_200()) { |
| lasat_board_info.li_flash_base = 0x1e000000; |
| |
| lb[LASAT_MTD_BOOTLOADER] = 0x1e400000; |
| |
| if (lasat_board_info.li_flash_size > 0x200000) { |
| ls[LASAT_MTD_CONFIG] = 0x100000; |
| ls[LASAT_MTD_FS] = 0x500000; |
| } |
| } else { |
| lasat_board_info.li_flash_base = 0x10000000; |
| |
| if (lasat_board_info.li_flash_size < 0x1000000) { |
| lb[LASAT_MTD_BOOTLOADER] = 0x10000000; |
| ls[LASAT_MTD_CONFIG] = 0x100000; |
| if (lasat_board_info.li_flash_size >= 0x400000) |
| ls[LASAT_MTD_FS] = |
| lasat_board_info.li_flash_size - 0x300000; |
| } |
| } |
| |
| for (i = 1; i < LASAT_MTD_LAST; i++) |
| lb[i] = lb[i-1] + ls[i-1]; |
| } |
| |
| int lasat_init_board_info(void) |
| { |
| int c; |
| unsigned long crc; |
| unsigned long cfg0, cfg1; |
| const struct product_info *ppi; |
| int i_n_base_models = N_BASE_MODELS; |
| const char * const * i_txt_base_models = txt_base_models; |
| int i_n_prids = N_PRIDS; |
| |
| memset(&lasat_board_info, 0, sizeof(lasat_board_info)); |
| |
| /* First read the EEPROM info */ |
| EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info, |
| sizeof(struct lasat_eeprom_struct)); |
| |
| /* Check the CRC */ |
| crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), |
| sizeof(struct lasat_eeprom_struct) - 4); |
| |
| if (crc != lasat_board_info.li_eeprom_info.crc32) { |
| printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does " |
| "not match calculated, attempting to soldier on...\n"); |
| } |
| |
| if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) { |
| printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version " |
| "%d, wanted version %d, attempting to soldier on...\n", |
| (unsigned int)lasat_board_info.li_eeprom_info.version, |
| LASAT_EEPROM_VERSION); |
| } |
| |
| cfg0 = lasat_board_info.li_eeprom_info.cfg[0]; |
| cfg1 = lasat_board_info.li_eeprom_info.cfg[1]; |
| |
| if (LASAT_W0_DSCTYPE(cfg0) != 1) { |
| printk(KERN_WARNING "WARNING...\nWARNING...\n" |
| "Invalid configuration read from EEPROM, attempting to " |
| "soldier on..."); |
| } |
| /* We have a valid configuration */ |
| |
| switch (LASAT_W0_SDRAMBANKSZ(cfg0)) { |
| case 0: |
| lasat_board_info.li_memsize = 0x0800000; |
| break; |
| case 1: |
| lasat_board_info.li_memsize = 0x1000000; |
| break; |
| case 2: |
| lasat_board_info.li_memsize = 0x2000000; |
| break; |
| case 3: |
| lasat_board_info.li_memsize = 0x4000000; |
| break; |
| case 4: |
| lasat_board_info.li_memsize = 0x8000000; |
| break; |
| default: |
| lasat_board_info.li_memsize = 0; |
| } |
| |
| switch (LASAT_W0_SDRAMBANKS(cfg0)) { |
| case 0: |
| break; |
| case 1: |
| lasat_board_info.li_memsize *= 2; |
| break; |
| default: |
| break; |
| } |
| |
| switch (LASAT_W0_BUSSPEED(cfg0)) { |
| case 0x0: |
| lasat_board_info.li_bus_hz = 60000000; |
| break; |
| case 0x1: |
| lasat_board_info.li_bus_hz = 66000000; |
| break; |
| case 0x2: |
| lasat_board_info.li_bus_hz = 66666667; |
| break; |
| case 0x3: |
| lasat_board_info.li_bus_hz = 80000000; |
| break; |
| case 0x4: |
| lasat_board_info.li_bus_hz = 83333333; |
| break; |
| case 0x5: |
| lasat_board_info.li_bus_hz = 100000000; |
| break; |
| } |
| |
| switch (LASAT_W0_CPUCLK(cfg0)) { |
| case 0x0: |
| lasat_board_info.li_cpu_hz = |
| lasat_board_info.li_bus_hz; |
| break; |
| case 0x1: |
| lasat_board_info.li_cpu_hz = |
| lasat_board_info.li_bus_hz + |
| (lasat_board_info.li_bus_hz >> 1); |
| break; |
| case 0x2: |
| lasat_board_info.li_cpu_hz = |
| lasat_board_info.li_bus_hz + |
| lasat_board_info.li_bus_hz; |
| break; |
| case 0x3: |
| lasat_board_info.li_cpu_hz = |
| lasat_board_info.li_bus_hz + |
| lasat_board_info.li_bus_hz + |
| (lasat_board_info.li_bus_hz >> 1); |
| break; |
| case 0x4: |
| lasat_board_info.li_cpu_hz = |
| lasat_board_info.li_bus_hz + |
| lasat_board_info.li_bus_hz + |
| lasat_board_info.li_bus_hz; |
| break; |
| } |
| |
| /* Flash size */ |
| switch (LASAT_W1_FLASHSIZE(cfg1)) { |
| case 0: |
| lasat_board_info.li_flash_size = 0x200000; |
| break; |
| case 1: |
| lasat_board_info.li_flash_size = 0x400000; |
| break; |
| case 2: |
| lasat_board_info.li_flash_size = 0x800000; |
| break; |
| case 3: |
| lasat_board_info.li_flash_size = 0x1000000; |
| break; |
| case 4: |
| lasat_board_info.li_flash_size = 0x2000000; |
| break; |
| } |
| |
| init_flash_sizes(); |
| |
| lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0); |
| lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid; |
| if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0) |
| lasat_board_info.li_prid = lasat_board_info.li_bmid; |
| |
| /* Base model stuff */ |
| if (lasat_board_info.li_bmid > i_n_base_models) |
| lasat_board_info.li_bmid = i_n_base_models; |
| strcpy(lasat_board_info.li_bmstr, |
| i_txt_base_models[lasat_board_info.li_bmid]); |
| |
| /* Product ID dependent values */ |
| c = lasat_board_info.li_prid; |
| if (c >= i_n_prids) { |
| strcpy(lasat_board_info.li_namestr, "Unknown Model"); |
| strcpy(lasat_board_info.li_typestr, "Unknown Type"); |
| } else { |
| ppi = &vendor_info_table[0].vi_product_info[c]; |
| strcpy(lasat_board_info.li_namestr, ppi->pi_name); |
| if (ppi->pi_type) |
| strcpy(lasat_board_info.li_typestr, ppi->pi_type); |
| else |
| sprintf(lasat_board_info.li_typestr, "%d", 10 * c); |
| } |
| |
| return 0; |
| } |
| |
| void lasat_write_eeprom_info(void) |
| { |
| unsigned long crc; |
| |
| mutex_lock(&lasat_eeprom_mutex); |
| |
| /* Generate the CRC */ |
| crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), |
| sizeof(struct lasat_eeprom_struct) - 4); |
| lasat_board_info.li_eeprom_info.crc32 = crc; |
| |
| /* Write the EEPROM info */ |
| EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info, |
| sizeof(struct lasat_eeprom_struct)); |
| |
| mutex_unlock(&lasat_eeprom_mutex); |
| } |
