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// SPDX-License-Identifier: GPL-2.0-only
/*
* PlanetCore configuration data support functions
*
* Author: Scott Wood <scottwood@freescale.com>
*
* Copyright (c) 2007 Freescale Semiconductor, Inc.
*/
#include "stdio.h"
#include "stdlib.h"
#include "ops.h"
#include "planetcore.h"
#include "io.h"
/* PlanetCore passes information to the OS in the form of
* a table of key=value strings, separated by newlines.
*
* The list is terminated by an empty string (i.e. two
* consecutive newlines).
*
* To make it easier to parse, we first convert all the
* newlines into null bytes.
*/
void planetcore_prepare_table(char *table)
{
do {
if (*table == '\n')
*table = 0;
table++;
} while (*(table - 1) || *table != '\n');
*table = 0;
}
const char *planetcore_get_key(const char *table, const char *key)
{
int keylen = strlen(key);
do {
if (!strncmp(table, key, keylen) && table[keylen] == '=')
return table + keylen + 1;
table += strlen(table) + 1;
} while (strlen(table) != 0);
return NULL;
}
int planetcore_get_decimal(const char *table, const char *key, u64 *val)
{
const char *str = planetcore_get_key(table, key);
if (!str)
return 0;
*val = strtoull(str, NULL, 10);
return 1;
}
int planetcore_get_hex(const char *table, const char *key, u64 *val)
{
const char *str = planetcore_get_key(table, key);
if (!str)
return 0;
*val = strtoull(str, NULL, 16);
return 1;
}
static u64 mac_table[4] = {
0x000000000000,
0x000000800000,
0x000000400000,
0x000000c00000,
};
void planetcore_set_mac_addrs(const char *table)
{
u8 addr[4][6];
u64 int_addr;
u32 i;
int j;
if (!planetcore_get_hex(table, PLANETCORE_KEY_MAC_ADDR, &int_addr))
return;
for (i = 0; i < 4; i++) {
u64 this_dev_addr = (int_addr & ~0x000000c00000) |
mac_table[i];
for (j = 5; j >= 0; j--) {
addr[i][j] = this_dev_addr & 0xff;
this_dev_addr >>= 8;
}
dt_fixup_mac_address(i, addr[i]);
}
}
static char prop_buf[MAX_PROP_LEN];
void planetcore_set_stdout_path(const char *table)
{
char *path;
const char *label;
void *node, *chosen;
label = planetcore_get_key(table, PLANETCORE_KEY_SERIAL_PORT);
if (!label)
return;
node = find_node_by_prop_value_str(NULL, "linux,planetcore-label",
label);
if (!node)
return;
path = get_path(node, prop_buf, MAX_PROP_LEN);
if (!path)
return;
chosen = finddevice("/chosen");
if (!chosen)
chosen = create_node(NULL, "chosen");
if (!chosen)
return;
setprop_str(chosen, "linux,stdout-path", path);
}
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