// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2008 * Heiko Schocher, DENX Software Engineering, hs@denx.de. * * (C) Copyright 2011 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(CONFIG_POST) #include "post.h" #endif #include "common.h" #include 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) { unsigned int pnvramaddr; unsigned int pram; unsigned int varaddr; unsigned int kernelmem; unsigned long rootfssize = 0; char envval[16]; char *p; pnvramaddr = CFG_SYS_SDRAM_BASE + gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM - CONFIG_KM_PNVRAM; sprintf(envval, "0x%x", pnvramaddr); env_set("pnvramaddr", envval); /* try to read rootfssize (ram image) from environment */ p = env_get("rootfssize"); if (p) strict_strtoul(p, 16, &rootfssize); pram = (rootfssize + CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM + CONFIG_KM_PNVRAM) / 0x400; env_set_ulong("pram", pram); varaddr = CFG_SYS_SDRAM_BASE + gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM; env_set_hex("varaddr", varaddr); sprintf(envval, "0x%x", varaddr); env_set("varaddr", envval); kernelmem = gd->ram_size - 0x400 * pram; sprintf(envval, "0x%x", kernelmem); env_set("kernelmem", envval); return 0; } #if IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE_SUPPORTED) #if ((!IS_ENABLED(CONFIG_PG_WCOM_UBOOT_BOOTPACKAGE) && \ !IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE)) || \ (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_BOOTPACKAGE) && \ IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE))) #error "It has to be either bootpackage or update u-boot image!" #endif void check_for_uboot_update(void) { void (*uboot_update_entry)(void) = (void (*)(void)) CONFIG_PG_WCOM_UBOOT_UPDATE_TEXT_BASE; char *isupdated = env_get("updateduboot"); ulong bootcount = bootcount_load(); ulong ebootcount = 0; if (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_BOOTPACKAGE)) { /* * When running in factory burned u-boot move to the updated * u-boot version only if updateduboot envvar is set to 'yes' * and bootcount limit is not exceeded. * Board must be able to start in factory bootloader mode! */ if (isupdated && !strncmp(isupdated, "yes", 3) && bootcount <= CONFIG_BOOTCOUNT_BOOTLIMIT) { printf("Check update: update detected, "); printf("starting new image @%08x ...\n", CONFIG_PG_WCOM_UBOOT_UPDATE_TEXT_BASE); ebootcount = early_bootcount_load(); if (ebootcount <= CONFIG_BOOTCOUNT_BOOTLIMIT) { early_bootcount_store(++ebootcount); uboot_update_entry(); } else { printf("Check update: warning: "); printf("early bootcount exceeded (%lu)\n", ebootcount); } } printf("Check update: starting factory image @%08x ...\n", CONFIG_TEXT_BASE); } else if (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE)) { /* * When running in field updated u-boot, make sure that * bootcount limit is never exceeded. Must never happen! */ WARN_ON(bootcount > CONFIG_BOOTCOUNT_BOOTLIMIT); printf("Check update: updated u-boot starting @%08x ...\n", CONFIG_TEXT_BASE); } } #endif #if defined(CONFIG_SYS_I2C_INIT_BOARD) 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) { 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; break; } } } if (ret == 0) for (i = 0; i < 5; i++) i2c_write_start_seq(); /* respect stop setup time */ udelay(DELAY_ABORT_SEQ); set_scl(1); udelay(DELAY_ABORT_SEQ); set_sda(1); get_sda(); return ret; } /** * 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(CONFIG_KM_COMMON_ETH_INIT) int board_eth_init(struct bd_info *bis) { if (ethernet_present()) return cpu_eth_init(bis); return -1; } #endif /* * 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(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { unsigned char buf[32]; char *p; p = get_local_var("IVM_BoardId"); if (!p) { printf("can't get the IVM_Boardid\n"); return 1; } strcpy((char *)buf, p); env_set("boardid", (char *)buf); printf("set boardid=%s\n", buf); p = get_local_var("IVM_HWKey"); if (!p) { printf("can't get the IVM_HWKey\n"); return 1; } strcpy((char *)buf, p); env_set("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 */ static int do_checkboardidhwk(struct cmd_tbl *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) { printf("can't get the IVM_Boardid\n"); return 1; } rc = strict_strtoul(p, 16, &ivmbid); p = get_local_var("IVM_HWKey"); if (!p) { 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 = env_get("boardid"); if (p) rc = strict_strtoul(p, 16, &envbid); p = env_get("hwkey"); if (p) 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 = env_get("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 = hextoul(rest, &endp); /* BoardId and HWkey are separated with a "_" */ if (*endp == '_') { rest = endp + 1; /* * use simple_strtoul because we need * &end */ hwkey = hextoul(rest, &endp); 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) { found = 1; envbid = bid; envhwkey = hwkey; env_set_hex("boardid", bid); env_set_hex("hwkey", hwkey); } } /* 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" ); /* * command km_checktestboot * if the testpin of the board is asserted, return 1 * * else return 0 */ static int do_checktestboot(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int testpin = 0; char *s = NULL; int testboot = 0; int verbose = argc > 1 && *argv[1] == 'v'; #if defined(CONFIG_POST) testpin = post_hotkeys_pressed(); #endif s = env_get("test_bank"); /* when test_bank is not set, act as if testpin is not asserted */ testboot = (testpin != 0) && (s); if (verbose) { printf("testpin = %d\n", testpin); /* cppcheck-suppress nullPointer */ printf("test_bank = %s\n", s ? s : "not set"); printf("boot test app : %s\n", (testboot) ? "yes" : "no"); } /* return 0 means: testboot, therefore we need the inversion */ return !testboot; } U_BOOT_CMD(km_checktestboot, 2, 0, do_checktestboot, "check if testpin is asserted", "[v]\n v - verbose output" );