/* * (C) Copyright 2008 * Heiko Schocher, DENX Software Engineering, hs@denx.de. * * (C) Copyright 2011 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <ioports.h> #include <command.h> #include <malloc.h> #include <hush.h> #include <net.h> #include <netdev.h> #include <asm/io.h> #include <linux/ctype.h> #include "common.h" #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) #include <i2c.h> #endif #if !defined(CONFIG_MPC83xx) static void i2c_write_start_seq(void); #endif DECLARE_GLOBAL_DATA_PTR; /* * Set Keymile specific environment variables * Currently only some memory layout variables are calculated here * ... ------------------------------------------------ * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM * ... |<------------------- pram ------------------->| * ... ------------------------------------------------ * @END_OF_RAM: denotes the RAM size * @pnvramaddr: Startadress of pseudo non volatile RAM in hex * @pram : preserved ram size in k * @varaddr : startadress for /var mounted into RAM */ int set_km_env(void) { uchar buf[32]; unsigned int pnvramaddr; unsigned int pram; unsigned int varaddr; unsigned int kernelmem; char *p; unsigned long rootfssize = 0; pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM - CONFIG_KM_PNVRAM; sprintf((char *)buf, "0x%x", pnvramaddr); setenv("pnvramaddr", (char *)buf); /* try to read rootfssize (ram image) from envrionment */ p = getenv("rootfssize"); if (p != NULL) strict_strtoul(p, 16, &rootfssize); pram = (rootfssize + CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM + CONFIG_KM_PNVRAM) / 0x400; sprintf((char *)buf, "0x%x", pram); setenv("pram", (char *)buf); varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM; sprintf((char *)buf, "0x%x", varaddr); setenv("varaddr", (char *)buf); kernelmem = gd->ram_size - 0x400 * pram; sprintf((char *)buf, "0x%x", kernelmem); setenv("kernelmem", (char *)buf); return 0; } #if defined(CONFIG_SYS_I2C_INIT_BOARD) #if !defined(CONFIG_MPC83xx) static void i2c_write_start_seq(void) { set_sda(1); udelay(DELAY_HALF_PERIOD); set_scl(1); udelay(DELAY_HALF_PERIOD); set_sda(0); udelay(DELAY_HALF_PERIOD); set_scl(0); udelay(DELAY_HALF_PERIOD); } /* * I2C is a synchronous protocol and resets of the processor in the middle * of an access can block the I2C Bus until a powerdown of the full unit is * done. This function toggles the SCL until the SCL and SCA line are * released, but max. 16 times, after this a I2C start-sequence is sent. * This I2C Deblocking mechanism was developed by Keymile in association * with Anatech and Atmel in 1998. */ int i2c_make_abort(void) { #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD) immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ; i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c; /* * disable I2C controller first, otherwhise it thinks we want to * talk to the slave port... */ clrbits_8(&i2c->i2c_i2mod, 0x01); /* Set the PortPins to GPIO */ setports(1); #endif int scl_state = 0; int sda_state = 0; int i = 0; int ret = 0; if (!get_sda()) { ret = -1; while (i < 16) { i++; set_scl(0); udelay(DELAY_ABORT_SEQ); set_scl(1); udelay(DELAY_ABORT_SEQ); scl_state = get_scl(); sda_state = get_sda(); if (scl_state && sda_state) { ret = 0; printf("[INFO] i2c abort after %d clocks\n", i); break; } } } if (ret == 0) for (i = 0; i < 5; i++) i2c_write_start_seq(); else printf("[ERROR] i2c abort failed\n"); /* respect stop setup time */ udelay(DELAY_ABORT_SEQ); set_scl(1); udelay(DELAY_ABORT_SEQ); set_sda(1); get_sda(); #if defined(CONFIG_HARD_I2C) /* Set the PortPins back to use for I2C */ setports(0); #endif return ret; } #endif /** * i2c_init_board - reset i2c bus. When the board is powercycled during a * bus transfer it might hang; for details see doc/I2C_Edge_Conditions. */ void i2c_init_board(void) { /* Now run the AbortSequence() */ i2c_make_abort(); } #endif #if !defined(MACH_TYPE_KM_KIRKWOOD) int ethernet_present(void) { struct km_bec_fpga *base = (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE; return in_8(&base->bprth) & PIGGY_PRESENT; } #endif int board_eth_init(bd_t *bis) { if (ethernet_present()) return cpu_eth_init(bis); return -1; } /* * do_setboardid command * read out the board id and the hw key from the intventory EEPROM and set * this values as environment variables. */ static int do_setboardid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { unsigned char buf[32]; char *p; p = get_local_var("IVM_BoardId"); if (p == NULL) { printf("can't get the IVM_Boardid\n"); return 1; } sprintf((char *)buf, "%s", p); setenv("boardid", (char *)buf); printf("set boardid=%s\n", buf); p = get_local_var("IVM_HWKey"); if (p == NULL) { printf("can't get the IVM_HWKey\n"); return 1; } sprintf((char *)buf, "%s", p); setenv("hwkey", (char *)buf); printf("set hwkey=%s\n", buf); printf("Execute manually saveenv for persistent storage.\n"); return 0; } U_BOOT_CMD(km_setboardid, 1, 0, do_setboardid, "setboardid", "read out bid and " "hwkey from IVM and set in environment"); /* * command km_checkbidhwk * if "boardid" and "hwkey" are not already set in the environment, do: * if a "boardIdListHex" exists in the environment: * - read ivm data for boardid and hwkey * - compare each entry of the boardIdListHex with the * IVM data: * if match: * set environment variables boardid, boardId, * hwkey, hwKey to the found values * both (boardid and boardId) are set because * they might be used differently in the * application and in the init scripts (?) * return 0 in case of match, 1 if not match or error */ int do_checkboardidhwk(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { unsigned long ivmbid = 0, ivmhwkey = 0; unsigned long envbid = 0, envhwkey = 0; char *p; int verbose = argc > 1 && *argv[1] == 'v'; int rc = 0; /* * first read out the real inventory values, these values are * already stored in the local hush variables */ p = get_local_var("IVM_BoardId"); if (p == NULL) { printf("can't get the IVM_Boardid\n"); return 1; } rc = strict_strtoul(p, 16, &ivmbid); p = get_local_var("IVM_HWKey"); if (p == NULL) { printf("can't get the IVM_HWKey\n"); return 1; } rc = strict_strtoul(p, 16, &ivmhwkey); if (!ivmbid || !ivmhwkey) { printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n"); return rc; } /* now try to read values from environment if available */ p = getenv("boardid"); if (p != NULL) rc = strict_strtoul(p, 16, &envbid); p = getenv("hwkey"); if (p != NULL) rc = strict_strtoul(p, 16, &envhwkey); if (rc != 0) { printf("strict_strtoul returns error: %d", rc); return rc; } if (!envbid || !envhwkey) { /* * BoardId/HWkey not available in the environment, so try the * environment variable for BoardId/HWkey list */ char *bidhwklist = getenv("boardIdListHex"); if (bidhwklist) { int found = 0; char *rest = bidhwklist; char *endp; if (verbose) { printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n", ivmbid, ivmhwkey); printf("boardIdHwKeyList: %s\n", bidhwklist); } while (!found) { /* loop over each bid/hwkey pair in the list */ unsigned long bid = 0; unsigned long hwkey = 0; while (*rest && !isxdigit(*rest)) rest++; /* * use simple_strtoul because we need &end and * we know we got non numeric char at the end */ bid = simple_strtoul(rest, &endp, 16); /* BoardId and HWkey are separated with a "_" */ if (*endp == '_') { rest = endp + 1; /* * use simple_strtoul because we need * &end */ hwkey = simple_strtoul(rest, &endp, 16); rest = endp; while (*rest && !isxdigit(*rest)) rest++; } if ((!bid) || (!hwkey)) { /* end of list */ break; } if (verbose) { printf("trying bid=0x%lX, hwkey=%ld\n", bid, hwkey); } /* * Compare the values of the found entry in the * list with the valid values which are stored * in the inventory eeprom. If they are equal * set the values in environment variables. */ if ((bid == ivmbid) && (hwkey == ivmhwkey)) { char buf[10]; found = 1; envbid = bid; envhwkey = hwkey; sprintf(buf, "%lx", bid); setenv("boardid", buf); sprintf(buf, "%lx", hwkey); setenv("hwkey", buf); } } /* end while( ! found ) */ } } /* compare now the values */ if ((ivmbid == envbid) && (ivmhwkey == envhwkey)) { printf("boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey); rc = 0; /* match */ } else { printf("Error: env boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey); printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid, ivmhwkey); rc = 1; /* don't match */ } return rc; } U_BOOT_CMD(km_checkbidhwk, 2, 0, do_checkboardidhwk, "check boardid and hwkey", "[v]\n - check environment parameter "\ "\"boardIdListHex\" against stored boardid and hwkey "\ "from the IVM\n v: verbose output" );