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-rw-r--r--board/scalys/grapeboard/board_configuration_data.c445
1 files changed, 445 insertions, 0 deletions
diff --git a/board/scalys/grapeboard/board_configuration_data.c b/board/scalys/grapeboard/board_configuration_data.c
new file mode 100644
index 0000000..bd6a04e
--- /dev/null
+++ b/board/scalys/grapeboard/board_configuration_data.c
@@ -0,0 +1,445 @@
+/*
+ * Copyright 2017 Scalys B.V.
+ * opensource@scalys.com
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/ctype.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+
+#include <spi.h>
+#include <spi_flash.h>
+#include <linux/errno.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <dm.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <spi.h>
+#include <dm/device-internal.h>
+
+#include <../../../include/generated/autoconf.h>
+#include "board_configuration_data.h"
+#include "gpio_grapeboard.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int add_mac_addressess_to_env(const void* blob)
+{
+ const char *propname;
+ const void *value;
+ int prop_offset, len;
+ int count = 0;
+ char mac_string[19], eth_string[10];
+ uint8_t mac_address[6];
+
+ if (fdt_check_header(blob) != 0) {
+ printf( "Board Configuration Data FDT corrupt\n");
+ return -1;
+ }
+
+ int nodeoff = fdt_path_offset(blob, "/network");
+
+ if (nodeoff < 0) {
+ printf("Network node not found\n");
+ return -1;
+ }
+ for (prop_offset = fdt_first_property_offset(blob, nodeoff);
+ prop_offset > 0;
+ prop_offset = fdt_next_property_offset(blob, prop_offset)) {
+ value = fdt_getprop_by_offset(blob, prop_offset,
+ &propname, &len);
+ if (!value) {
+ return -EINVAL;
+ }
+
+ memcpy(mac_address, value, 6);
+
+ /* ret = fdtdec_get_byte_array( blob, prop_offset, propname, mac_address, 6 ); */
+
+ if (count) {
+ snprintf(eth_string, sizeof(eth_string), "eth%iaddr", count);
+ }
+ else {
+ snprintf(eth_string, sizeof(eth_string), "ethaddr");
+ }
+
+ snprintf(mac_string, sizeof(mac_string),
+ "%02x:%02x:%02x:%02x:%02x:%02x",
+ mac_address[0], mac_address[1], mac_address[2],
+ mac_address[3], mac_address[4], mac_address[5]
+ );
+
+ printf("%s : [ %s ]\n", propname, mac_string );
+
+ setenv( eth_string, mac_string);
+
+ count++;
+
+ }
+ printf("Done reading BCD\n");
+
+ return 0;
+}
+
+const void* get_boardinfo_rescue_flash(void)
+{
+ struct ccsr_gpio *pgpio = (void *)(CONFIG_SYS_GPIO2);
+ struct spi_flash *flash;
+
+ uint32_t bcd_data_lenght;
+ uint8_t *bcd_data = NULL;
+ uint32_t calculated_crc, received_crc;
+ int dtb_length;
+ int ret = 0;
+
+ unsigned int bus = 0;
+ unsigned int cs = 0;
+ unsigned int speed = 10000000;
+ unsigned int mode = SPI_MODE_0;
+
+#ifdef CONFIG_DM_SPI_FLASH
+ struct udevice *new, *bus_dev;
+ /* In DM mode defaults will be taken from DT */
+ speed = 0, mode = 0;
+#else
+ struct spi_flash *new;
+#endif
+
+ /* Change chip select to rescue QSPI NOR flash */
+ setbits_be32(&pgpio->gpdir, QSPI_MUX_N_MASK);
+ setbits_be32(&pgpio->gpdat, QSPI_MUX_N_MASK);
+
+#ifdef CONFIG_DM_SPI_FLASH
+ /* Remove the old device, otherwise probe will just be a nop */
+ ret = spi_find_bus_and_cs(bus, cs, &bus_dev, &new);
+ if (!ret) {
+ device_remove(new, DM_REMOVE_NORMAL);
+ }
+ flash = NULL;
+ ret = spi_flash_probe_bus_cs(bus, cs, speed, mode, &new);
+ if (ret) {
+ printf("Failed to initialize SPI flash at %u:%u (error %d)\n",
+ bus, cs, ret);
+ return NULL;
+ }
+
+ flash = dev_get_uclass_priv(new);
+#else
+ if (flash)
+ spi_flash_free(flash);
+
+ new = spi_flash_probe(bus, cs, speed, mode);
+ flash = new;
+
+ if (!new) {
+ printf("Failed to initialize SPI flash at %u:%u\n", bus, cs);
+ return NULL;
+ }
+
+ flash = new;
+#endif
+
+ /* Read the last 4 bytes to determine the length of the DTB data */
+ ret = spi_flash_read(flash, (BCD_FLASH_SIZE-4), 4, (uint8_t*) &bcd_data_lenght);
+ if (ret != 0) {
+ printf("Error reading bcd length\n");
+ errno = -ENODEV;
+ goto err_no_free;
+ }
+
+ /* Convert length from big endianess to architecture endianess */
+ bcd_data_lenght = ntohl(bcd_data_lenght);
+ printf("bcd_data_lenght = %i\n", bcd_data_lenght );
+
+ if (bcd_data_lenght > BCD_FLASH_SIZE ) {
+ printf("BCD data length error %02x %02x %02x %02x\n",
+ ( (uint8_t*) &bcd_data_lenght)[0],
+ ( (uint8_t*) &bcd_data_lenght)[1],
+ ( (uint8_t*) &bcd_data_lenght)[2],
+ ( (uint8_t*) &bcd_data_lenght)[3] );
+ errno = -EMSGSIZE;
+ goto err_no_free;
+ }
+
+ /* Allocate, and verify memory for the BCD data */
+ bcd_data = (uint8_t*) malloc(bcd_data_lenght);
+ if (bcd_data == NULL) {
+ printf("Error locating memory for BCD data\n");
+ goto err_no_free;
+ }
+ printf("Allocated memory for BCD data\n");
+
+ /* Read the DTB BCD data to memory */
+ ret = spi_flash_read(flash, (BCD_FLASH_SIZE-bcd_data_lenght), bcd_data_lenght, (uint8_t*) &bcd_data);
+ printf("Read data from I2C bus\n");
+
+ if (ret != 0) {
+ printf("Error reading complete BCD data from EEPROM\n");
+ errno = -ENOMEM;
+ goto err_free;
+ }
+ dtb_length = bcd_data_lenght - BCD_LENGTH_SIZE - BCD_HASH_SIZE;
+
+ /* Calculate CRC on read DTB data */
+ calculated_crc = crc32( 0, bcd_data, dtb_length);
+
+ /* Received CRC is packed after the DTB data */
+ received_crc = *((uint32_t*) &bcd_data[dtb_length]);
+
+ /* Convert CRC from big endianess to architecture endianess */
+ received_crc = ntohl(received_crc);
+
+ if (calculated_crc != received_crc) {
+ printf("Checksum error. expected %08x, got %08x\n",
+ calculated_crc, received_crc);
+ errno = -EBADMSG;
+ goto err_free;
+ }
+
+ /* Everything checked out, return the BCD data.
+ * The caller is expected to free this data */
+ return bcd_data;
+
+err_free:
+ /* free the allocated buffer */
+ free(bcd_data);
+
+err_no_free:
+ /* Revert chip select for standard QSPI flash */
+ clrbits_be32(&pgpio->gpdat, QSPI_MUX_N_MASK);
+
+ return NULL;
+}
+
+#ifndef CONFIG_SPL_BUILD
+
+#ifndef CONFIG_CMD_FDT_MAX_DUMP
+#define CONFIG_CMD_FDT_MAX_DUMP 64
+#endif
+
+/*
+ * Heuristic to guess if this is a string or concatenated strings.
+ */
+
+static int is_printable_string(const void *data, int len)
+{
+ const char *s = data;
+
+ /* zero length is not */
+ if (len == 0)
+ return 0;
+
+ /* must terminate with zero or '\n' */
+ if (s[len - 1] != '\0' && s[len - 1] != '\n')
+ return 0;
+
+ /* printable or a null byte (concatenated strings) */
+ while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
+ /*
+ * If we see a null, there are three possibilities:
+ * 1) If len == 1, it is the end of the string, printable
+ * 2) Next character also a null, not printable.
+ * 3) Next character not a null, continue to check.
+ */
+ if (s[0] == '\0') {
+ if (len == 1)
+ return 1;
+ if (s[1] == '\0')
+ return 0;
+ }
+ s++;
+ len--;
+ }
+
+ /* Not the null termination, or not done yet: not printable */
+ if (*s != '\0' || (len != 0))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Print the property in the best format, a heuristic guess. Print as
+ * a string, concatenated strings, a byte, word, double word, or (if all
+ * else fails) it is printed as a stream of bytes.
+ */
+static void print_data(const void *data, int len)
+{
+ int j;
+
+ /* no data, don't print */
+ if (len == 0)
+ return;
+
+ /*
+ * It is a string, but it may have multiple strings (embedded '\0's).
+ */
+ if (is_printable_string(data, len)) {
+ puts("\"");
+ j = 0;
+ while (j < len) {
+ if (j > 0)
+ puts("\", \"");
+ puts(data);
+ j += strlen(data) + 1;
+ data += strlen(data) + 1;
+ }
+ puts("\"");
+ return;
+ }
+
+ if ((len %4) == 0) {
+ if (len > CONFIG_CMD_FDT_MAX_DUMP)
+ printf("* 0x%p [0x%08x]", data, len);
+ else {
+ const __be32 *p;
+
+ printf("<");
+ for (j = 0, p = data; j < len/4; j++)
+ printf("0x%08x%s", fdt32_to_cpu(p[j]),
+ j < (len/4 - 1) ? " " : "");
+ printf(">");
+ }
+ } else { /* anything else... hexdump */
+ if (len > CONFIG_CMD_FDT_MAX_DUMP)
+ printf("* 0x%p [0x%08x]", data, len);
+ else {
+ const u8 *s;
+
+ printf("[");
+ for (j = 0, s = data; j < len; j++)
+ printf("%02x%s", s[j], j < len - 1 ? " " : "");
+ printf("]");
+ }
+ }
+}
+
+/*
+ * Recursively print (a portion of) the working_fdt. The depth parameter
+ * determines how deeply nested the fdt is printed.
+ */
+#define MAX_LEVEL 4
+static int bcd_fdt_print(const void* address, int depth)
+{
+ static char tabs[MAX_LEVEL+1] =
+ "\t\t\t\t\t";
+ const void *nodep; /* property node pointer */
+ int nodeoffset; /* node offset from libfdt */
+ int nextoffset; /* next node offset from libfdt */
+ uint32_t tag; /* tag */
+ int len; /* length of the property */
+ int level = 0; /* keep track of nesting level */
+ const struct fdt_property *fdt_prop;
+ const char *pathp;
+
+ nodeoffset = fdt_path_offset (address, "/");
+ if (nodeoffset < 0) {
+ /*
+ * Not found or something else bad happened.
+ */
+ printf ("libfdt fdt_path_offset() returned %s\n",
+ fdt_strerror(nodeoffset));
+ return 1;
+ }
+
+ /*
+ * The user passed in a node path and no property,
+ * print the node and all subnodes.
+ */
+ while(level >= 0) {
+ tag = fdt_next_tag(address, nodeoffset, &nextoffset);
+ switch(tag) {
+ case FDT_BEGIN_NODE:
+ pathp = fdt_get_name(address, nodeoffset, NULL);
+ if (level <= depth) {
+ if (pathp == NULL)
+ pathp = "/* NULL pointer error */";
+ if (*pathp == '\0')
+ pathp = "/"; /* root is nameless */
+ printf("%s%s {\n",
+ &tabs[MAX_LEVEL - level], pathp);
+ }
+ level++;
+ if (level >= MAX_LEVEL) {
+ printf("Nested too deep, aborting.\n");
+ return 1;
+ }
+ break;
+ case FDT_END_NODE:
+ level--;
+ if (level <= depth)
+ printf("%s};\n", &tabs[MAX_LEVEL - level]);
+ if (level == 0) {
+ level = -1; /* exit the loop */
+ }
+ break;
+ case FDT_PROP:
+ fdt_prop = fdt_offset_ptr(address, nodeoffset,
+ sizeof(*fdt_prop));
+ pathp = fdt_string(address,
+ fdt32_to_cpu(fdt_prop->nameoff));
+ len = fdt32_to_cpu(fdt_prop->len);
+ nodep = fdt_prop->data;
+ if (len < 0) {
+ printf ("libfdt fdt_getprop(): %s\n",
+ fdt_strerror(len));
+ return 1;
+ } else if (len == 0) {
+ /* the property has no value */
+ if (level <= depth)
+ printf("%s%s;\n",
+ &tabs[MAX_LEVEL - level],
+ pathp);
+ } else {
+ if (level <= depth) {
+ printf("%s%s = ",
+ &tabs[MAX_LEVEL - level],
+ pathp);
+ print_data (nodep, len);
+ printf(";\n");
+ }
+ }
+ break;
+ case FDT_NOP:
+ printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
+ break;
+ case FDT_END:
+ return 1;
+ default:
+ if (level <= depth)
+ printf("Unknown tag 0x%08X\n", tag);
+ return 1;
+ }
+ nodeoffset = nextoffset;
+ }
+ return 0;
+}
+
+int do_bcdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ const void* bcd_dtc_blob;
+ int ret = 0;
+
+ bcd_dtc_blob = get_boardinfo_rescue_flash();
+
+ if (bcd_dtc_blob != NULL) {
+ bcd_fdt_print(bcd_dtc_blob, 4);
+ }
+
+ return ret;
+}
+
+/* U_BOOT_CMD(name,maxargs,repeatable,command,"usage","help") */
+U_BOOT_CMD(
+ bcdinfo,
+ 1,
+ 1,
+ do_bcdinfo,
+ "Show the Board Configuration Data (stored in rescue flash)",
+ ""
+);
+#endif
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