mirror of
https://github.com/AsahiLinux/u-boot
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415 lines
9.7 KiB
C
415 lines
9.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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*
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* Read FactorySet information from EEPROM into global structure.
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* (C) Copyright 2013 Siemens Schweiz AG
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*/
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#if !defined(CONFIG_SPL_BUILD)
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#include <common.h>
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#include <env.h>
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#include <dm.h>
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#include <env_internal.h>
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#include <i2c.h>
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#include <log.h>
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#include <asm/io.h>
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#if !CONFIG_IS_ENABLED(TARGET_GIEDI) && !CONFIG_IS_ENABLED(TARGET_DENEB)
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#include <asm/arch/cpu.h>
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#endif
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#include <asm/arch/sys_proto.h>
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#include <asm/unaligned.h>
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#include <net.h>
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#include <errno.h>
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#include <g_dnl.h>
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#include "factoryset.h"
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#define EEPR_PG_SZ 0x80
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#define EEPROM_FATORYSET_OFFSET 0x400
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#define OFF_PG EEPROM_FATORYSET_OFFSET/EEPR_PG_SZ
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/* Global variable that contains necessary information from FactorySet */
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struct factorysetcontainer factory_dat;
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#define fact_get_char(i) *((char *)&eeprom_buf[i])
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static int fact_match(unsigned char *eeprom_buf, uchar *s1, int i2)
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{
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if (s1 == NULL)
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return -1;
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while (*s1 == fact_get_char(i2++))
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if (*s1++ == '=')
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return i2;
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if (*s1 == '\0' && fact_get_char(i2-1) == '=')
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return i2;
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return -1;
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}
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static int get_factory_val(unsigned char *eeprom_buf, int size, uchar *name,
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uchar *buf, int len)
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{
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int i, nxt = 0;
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for (i = 0; fact_get_char(i) != '\0'; i = nxt + 1) {
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int val, n;
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for (nxt = i; fact_get_char(nxt) != '\0'; ++nxt) {
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if (nxt >= size)
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return -1;
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}
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val = fact_match(eeprom_buf, (uchar *)name, i);
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if (val < 0)
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continue;
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/* found; copy out */
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for (n = 0; n < len; ++n, ++buf) {
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*buf = fact_get_char(val++);
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if (*buf == '\0')
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return n;
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}
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if (n)
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*--buf = '\0';
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printf("env_buf [%d bytes] too small for value of \"%s\"\n",
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len, name);
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return n;
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}
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return -1;
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}
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static
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int get_factory_record_val(unsigned char *eeprom_buf, int size, uchar *record,
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uchar *name, uchar *buf, int len)
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{
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int ret = -1;
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int i, nxt = 0;
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int c;
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unsigned char end = 0xff;
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unsigned char tmp;
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for (i = 0; fact_get_char(i) != end; i = nxt) {
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nxt = i + 1;
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if (fact_get_char(i) == '>') {
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int pos;
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int endpos;
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int z;
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int level = 0;
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c = strncmp((char *)&eeprom_buf[i + 1], (char *)record,
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strlen((char *)record));
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if (c == 0) {
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/* record found */
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pos = i + strlen((char *)record) + 2;
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nxt = pos;
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/* search for "<" */
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c = -1;
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for (z = pos; fact_get_char(z) != end; z++) {
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if (fact_get_char(z) == '<') {
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if (level == 0) {
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endpos = z;
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nxt = endpos;
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c = 0;
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break;
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} else {
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level--;
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}
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}
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if (fact_get_char(z) == '>')
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level++;
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}
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} else {
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continue;
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}
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if (c == 0) {
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/* end found -> call get_factory_val */
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tmp = eeprom_buf[endpos];
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eeprom_buf[endpos] = end;
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ret = get_factory_val(&eeprom_buf[pos],
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endpos - pos, name, buf, len);
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/* fix buffer */
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eeprom_buf[endpos] = tmp;
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debug("%s: %s.%s = %s\n",
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__func__, record, name, buf);
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return ret;
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}
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}
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}
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return ret;
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}
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int factoryset_read_eeprom(int i2c_addr)
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{
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int i, pages = 0, size = 0;
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unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH];
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unsigned char *cp, *cp1;
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#if CONFIG_IS_ENABLED(DM_I2C)
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struct udevice *bus, *dev;
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int ret;
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#endif
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#if defined(CONFIG_DFU_OVER_USB)
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factory_dat.usb_vendor_id = CONFIG_USB_GADGET_VENDOR_NUM;
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factory_dat.usb_product_id = CONFIG_USB_GADGET_PRODUCT_NUM;
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#endif
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#if CONFIG_IS_ENABLED(DM_I2C)
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ret = uclass_get_device_by_seq(UCLASS_I2C, EEPROM_I2C_BUS, &bus);
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if (ret)
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goto err;
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ret = dm_i2c_probe(bus, i2c_addr, 0, &dev);
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if (ret)
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goto err;
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ret = i2c_set_chip_offset_len(dev, 2);
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if (ret)
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goto err;
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ret = dm_i2c_read(dev, EEPROM_FATORYSET_OFFSET, hdr, sizeof(hdr));
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if (ret)
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goto err;
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#else
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if (i2c_probe(i2c_addr))
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goto err;
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if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr)))
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goto err;
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#endif
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if ((hdr[0] != 0x99) || (hdr[1] != 0x80)) {
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printf("FactorySet is not right in eeprom.\n");
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return 1;
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}
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/* get FactorySet size */
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size = (hdr[2] << 8) + hdr[3] + sizeof(hdr);
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if (size > 0x3bfa)
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size = 0x3bfa;
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pages = size / EEPR_PG_SZ;
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/*
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* read the eeprom using i2c
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* I can not read entire eeprom in once, so separate into several
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* times. Furthermore, fetch eeprom take longer time, so we fetch
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* data after every time we got a record from eeprom
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*/
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debug("Read eeprom page :\n");
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for (i = 0; i < pages; i++) {
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#if CONFIG_IS_ENABLED(DM_I2C)
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ret = dm_i2c_read(dev, (OFF_PG + i) * EEPR_PG_SZ,
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eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ);
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if (ret)
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goto err;
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#else
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if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2,
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eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
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goto err;
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#endif
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}
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if (size % EEPR_PG_SZ) {
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#if CONFIG_IS_ENABLED(DM_I2C)
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ret = dm_i2c_read(dev, (OFF_PG + pages) * EEPR_PG_SZ,
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eeprom_buf + (pages * EEPR_PG_SZ),
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size % EEPR_PG_SZ);
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if (ret)
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goto err;
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#else
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if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2,
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eeprom_buf + (pages * EEPR_PG_SZ),
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(size % EEPR_PG_SZ)))
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goto err;
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#endif
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}
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/* we do below just for eeprom align */
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for (i = 0; i < size; i++)
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if (eeprom_buf[i] == '\n')
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eeprom_buf[i] = 0;
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/* skip header */
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size -= sizeof(hdr);
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cp = (uchar *)eeprom_buf + sizeof(hdr);
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/* get mac address */
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get_factory_record_val(cp, size, (uchar *)"ETH1", (uchar *)"mac",
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buf, MAX_STRING_LENGTH);
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cp1 = buf;
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for (i = 0; i < 6; i++) {
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factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16);
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cp1 += 3;
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}
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#if CONFIG_IS_ENABLED(TARGET_GIEDI) || CONFIG_IS_ENABLED(TARGET_DENEB)
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/* get mac address for WLAN */
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ret = get_factory_record_val(cp, size, (uchar *)"WLAN1", (uchar *)"mac",
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buf, MAX_STRING_LENGTH);
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if (ret > 0) {
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cp1 = buf;
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for (i = 0; i < 6; i++) {
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factory_dat.mac_wlan[i] = simple_strtoul((char *)cp1,
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NULL, 16);
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cp1 += 3;
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}
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}
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#endif
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#if defined(CONFIG_DFU_OVER_USB)
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/* read vid and pid for dfu mode */
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if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
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(uchar *)"vid", buf,
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MAX_STRING_LENGTH)) {
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factory_dat.usb_vendor_id = simple_strtoul((char *)buf,
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NULL, 16);
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}
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if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
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(uchar *)"pid", buf,
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MAX_STRING_LENGTH)) {
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factory_dat.usb_product_id = simple_strtoul((char *)buf,
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NULL, 16);
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}
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printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
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factory_dat.usb_product_id);
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#endif
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#if defined(CONFIG_VIDEO)
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if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1",
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(uchar *)"name", factory_dat.disp_name,
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MAX_STRING_LENGTH)) {
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debug("display name: %s\n", factory_dat.disp_name);
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}
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#endif
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if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
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(uchar *)"num", factory_dat.serial,
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MAX_STRING_LENGTH)) {
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debug("serial number: %s\n", factory_dat.serial);
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}
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if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
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(uchar *)"ver", buf,
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MAX_STRING_LENGTH)) {
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factory_dat.version = simple_strtoul((char *)buf,
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NULL, 16);
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debug("version number: %d\n", factory_dat.version);
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}
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/* Get ASN from factory set if available */
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if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
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(uchar *)"id", factory_dat.asn,
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MAX_STRING_LENGTH)) {
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debug("factoryset asn: %s\n", factory_dat.asn);
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} else {
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factory_dat.asn[0] = 0;
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}
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/* Get COMP/ver from factory set if available */
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if (0 <= get_factory_record_val(cp, size, (uchar *)"COMP",
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(uchar *)"ver",
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factory_dat.comp_version,
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MAX_STRING_LENGTH)) {
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debug("factoryset COMP/ver: %s\n", factory_dat.comp_version);
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} else {
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strcpy((char *)factory_dat.comp_version, "1.0");
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}
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return 0;
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err:
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printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
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return 1;
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}
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static int get_mac_from_efuse(uint8_t mac[6])
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{
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#ifdef CONFIG_AM33XX
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struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
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uint32_t mac_hi, mac_lo;
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mac_lo = readl(&cdev->macid0l);
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mac_hi = readl(&cdev->macid0h);
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mac[0] = mac_hi & 0xFF;
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mac[1] = (mac_hi & 0xFF00) >> 8;
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mac[2] = (mac_hi & 0xFF0000) >> 16;
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mac[3] = (mac_hi & 0xFF000000) >> 24;
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mac[4] = mac_lo & 0xFF;
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mac[5] = (mac_lo & 0xFF00) >> 8;
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#else
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/* unhandled */
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memset(mac, 0, 6);
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#endif
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if (!is_valid_ethaddr(mac)) {
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puts("Warning: ethaddr not set by FactorySet or E-fuse. ");
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puts("Set <ethaddr> variable to overcome this.\n");
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return -1;
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}
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return 0;
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}
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static int factoryset_mac_env_set(void)
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{
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uint8_t mac_addr[6];
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/* Set mac from factoryset or try reading E-fuse */
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debug("FactorySet: Set mac address\n");
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if (is_valid_ethaddr(factory_dat.mac)) {
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memcpy(mac_addr, factory_dat.mac, 6);
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} else {
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debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n");
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if (get_mac_from_efuse(mac_addr) < 0)
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return -1;
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}
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eth_env_set_enetaddr("ethaddr", mac_addr);
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#if CONFIG_IS_ENABLED(TARGET_GIEDI) || CONFIG_IS_ENABLED(TARGET_DENEB)
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eth_env_set_enetaddr("eth1addr", mac_addr);
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/* wlan mac */
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if (is_valid_ethaddr(factory_dat.mac_wlan))
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eth_env_set_enetaddr("eth2addr", factory_dat.mac_wlan);
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#endif
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return 0;
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}
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static void factoryset_dtb_env_set(void)
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{
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/* Set ASN in environment*/
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if (factory_dat.asn[0] != 0) {
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env_set("dtb_name", (char *)factory_dat.asn);
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} else {
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/* dtb suffix gets added in load script */
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env_set("dtb_name", "default");
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}
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}
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int factoryset_env_set(void)
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{
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int ret = 0;
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factoryset_dtb_env_set();
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if (factoryset_mac_env_set() < 0)
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ret = -1;
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return ret;
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}
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int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
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{
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put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor);
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put_unaligned(factory_dat.usb_product_id, &dev->idProduct);
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g_dnl_set_serialnumber((char *)factory_dat.serial);
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return 0;
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}
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int g_dnl_get_board_bcd_device_number(int gcnum)
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{
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return factory_dat.version;
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}
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#endif /* defined(CONFIG_SPL_BUILD) */
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