diff options
Diffstat (limited to 'qemu/roms/u-boot/board/v38b/ethaddr.c')
| -rw-r--r-- | qemu/roms/u-boot/board/v38b/ethaddr.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/qemu/roms/u-boot/board/v38b/ethaddr.c b/qemu/roms/u-boot/board/v38b/ethaddr.c deleted file mode 100644 index 982998fad..000000000 --- a/qemu/roms/u-boot/board/v38b/ethaddr.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * (C) Copyright 2006 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc5xxx.h> - -/* For the V38B board the pin is GPIO_PSC_6 */ -#define GPIO_PIN GPIO_PSC6_0 - -#define NO_ERROR 0 -#define ERR_NO_NUMBER 1 -#define ERR_BAD_NUMBER 2 - -static int is_high(void); -static int check_device(void); -static void io_out(int value); -static void io_input(void); -static void io_output(void); -static void init_gpio(void); -static void read_byte(unsigned char *data); -static void write_byte(unsigned char command); - -void read_2501_memory(unsigned char *psernum, unsigned char *perr); -void board_get_enetaddr(uchar *enetaddr); - - -static int is_high() -{ - return (*((vu_long *) MPC5XXX_WU_GPIO_DATA_I) & GPIO_PIN); -} - -static void io_out(int value) -{ - if (value) - *((vu_long *) MPC5XXX_WU_GPIO_DATA_O) |= GPIO_PIN; - else - *((vu_long *) MPC5XXX_WU_GPIO_DATA_O) &= ~GPIO_PIN; -} - -static void io_input() -{ - *((vu_long *) MPC5XXX_WU_GPIO_DIR) &= ~GPIO_PIN; - udelay(3); /* allow input to settle */ -} - -static void io_output() -{ - *((vu_long *) MPC5XXX_WU_GPIO_DIR) |= GPIO_PIN; -} - -static void init_gpio() -{ - *((vu_long *) MPC5XXX_WU_GPIO_ENABLE) |= GPIO_PIN; /* Enable appropriate pin */ -} - -void read_2501_memory(unsigned char *psernum, unsigned char *perr) -{ -#define NBYTES 28 - unsigned char crcval, i; - unsigned char buf[NBYTES]; - - *perr = 0; - crcval = 0; - - for (i = 0; i < NBYTES; i++) - buf[i] = 0; - - if (!check_device()) - *perr = ERR_NO_NUMBER; - else { - *perr = NO_ERROR; - write_byte(0xCC); /* skip ROM (0xCC) */ - write_byte(0xF0); /* Read memory command 0xF0 */ - write_byte(0x00); /* Address TA1=0, TA2=0 */ - write_byte(0x00); - read_byte(&crcval); /* Read CRC of address and command */ - - for (i = 0; i < NBYTES; i++) - read_byte(&buf[i]); - } - if (strncmp((const char *) &buf[11], "MAREL IEEE 802.3", 16)) { - *perr = ERR_BAD_NUMBER; - psernum[0] = 0x00; - psernum[1] = 0xE0; - psernum[2] = 0xEE; - psernum[3] = 0xFF; - psernum[4] = 0xFF; - psernum[5] = 0xFF; - } else { - psernum[0] = 0x00; - psernum[1] = 0xE0; - psernum[2] = 0xEE; - psernum[3] = buf[7]; - psernum[4] = buf[6]; - psernum[5] = buf[5]; - } -} - -static int check_device() -{ - int found; - - io_output(); - io_out(0); - udelay(500); /* must be at least 480 us low pulse */ - - io_input(); - udelay(60); - - found = (is_high() == 0) ? 1 : 0; - udelay(500); /* must be at least 480 us low pulse */ - - return found; -} - -static void write_byte(unsigned char command) -{ - char i; - - for (i = 0; i < 8; i++) { - /* 1 us to 15 us low pulse starts bit slot */ - /* Start with high pulse for 3 us */ - io_input(); - udelay(3); - - io_out(0); - io_output(); - udelay(3); - - if (command & 0x01) { - /* 60 us high for 1-bit */ - io_input(); - udelay(60); - } else - /* 60 us low for 0-bit */ - udelay(60); - /* Leave pin as input */ - io_input(); - - command = command >> 1; - } -} - -static void read_byte(unsigned char *data) -{ - unsigned char i, rdat = 0; - - for (i = 0; i < 8; i++) { - /* read one bit from one-wire device */ - - /* 1 - 15 us low starts bit slot */ - io_out(0); - io_output(); - udelay(0); - - /* allow line to be pulled high */ - io_input(); - - /* delay 10 us */ - udelay(10); - - /* now sample input status */ - if (is_high()) - rdat = (rdat >> 1) | 0x80; - else - rdat = rdat >> 1; - - udelay(60); /* at least 60 us */ - } - /* copy the return value */ - *data = rdat; -} - -void board_get_enetaddr(uchar *enetaddr) -{ - unsigned char sn[6], err = NO_ERROR; - - init_gpio(); - - read_2501_memory(sn, &err); - - if (err == NO_ERROR) { - sprintf((char *)enetaddr, "%02x:%02x:%02x:%02x:%02x:%02x", - sn[0], sn[1], sn[2], sn[3], sn[4], sn[5]); - printf("MAC address: %s\n", enetaddr); - setenv("ethaddr", (char *)enetaddr); - } else { - sprintf((char *)enetaddr, "00:01:02:03:04:05"); - printf("Error reading MAC address.\n"); - printf("Setting default to %s\n", enetaddr); - setenv("ethaddr", (char *)enetaddr); - } -} |