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Scott Wood
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Paul Mackerras
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Oct 3, 2007
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--- | ||
refs/heads/master: 27ff35d9026b5d41d66ed95b65d7819db4cf5fb1 | ||
refs/heads/master: fec6047047fda307e47b9e87697144a89528c752 |
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/* | ||
* PlanetCore configuration data support functions | ||
* | ||
* Author: Scott Wood <scottwood@freescale.com> | ||
* | ||
* Copyright (c) 2007 Freescale Semiconductor, Inc. | ||
* | ||
* This program is free software; you can redistribute it and/or modify it | ||
* under the terms of the GNU General Public License version 2 as published | ||
* by the Free Software Foundation. | ||
*/ | ||
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#include "stdio.h" | ||
#include "stdlib.h" | ||
#include "ops.h" | ||
#include "planetcore.h" | ||
#include "io.h" | ||
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/* 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. | ||
*/ | ||
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void planetcore_prepare_table(char *table) | ||
{ | ||
do { | ||
if (*table == '\n') | ||
*table = 0; | ||
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table++; | ||
} while (*(table - 1) || *table != '\n'); | ||
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*table = 0; | ||
} | ||
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const char *planetcore_get_key(const char *table, const char *key) | ||
{ | ||
int keylen = strlen(key); | ||
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do { | ||
if (!strncmp(table, key, keylen) && table[keylen] == '=') | ||
return table + keylen + 1; | ||
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table += strlen(table) + 1; | ||
} while (strlen(table) != 0); | ||
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return NULL; | ||
} | ||
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int planetcore_get_decimal(const char *table, const char *key, u64 *val) | ||
{ | ||
const char *str = planetcore_get_key(table, key); | ||
if (!str) | ||
return 0; | ||
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*val = strtoull(str, NULL, 10); | ||
return 1; | ||
} | ||
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int planetcore_get_hex(const char *table, const char *key, u64 *val) | ||
{ | ||
const char *str = planetcore_get_key(table, key); | ||
if (!str) | ||
return 0; | ||
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*val = strtoull(str, NULL, 16); | ||
return 1; | ||
} | ||
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static u64 mac_table[4] = { | ||
0x000000000000, | ||
0x000000800000, | ||
0x000000400000, | ||
0x000000c00000, | ||
}; | ||
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void planetcore_set_mac_addrs(const char *table) | ||
{ | ||
u8 addr[4][6]; | ||
u64 int_addr; | ||
u32 i; | ||
int j; | ||
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if (!planetcore_get_hex(table, PLANETCORE_KEY_MAC_ADDR, &int_addr)) | ||
return; | ||
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for (i = 0; i < 4; i++) { | ||
u64 this_dev_addr = (int_addr & ~0x000000c00000) | | ||
mac_table[i]; | ||
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for (j = 5; j >= 0; j--) { | ||
addr[i][j] = this_dev_addr & 0xff; | ||
this_dev_addr >>= 8; | ||
} | ||
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dt_fixup_mac_address(i, addr[i]); | ||
} | ||
} | ||
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static char prop_buf[MAX_PROP_LEN]; | ||
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void planetcore_set_stdout_path(const char *table) | ||
{ | ||
char *path; | ||
const char *label; | ||
void *node, *chosen; | ||
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label = planetcore_get_key(table, PLANETCORE_KEY_SERIAL_PORT); | ||
if (!label) | ||
return; | ||
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node = find_node_by_prop_value_str(NULL, "linux,planetcore-label", | ||
label); | ||
if (!node) | ||
return; | ||
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path = get_path(node, prop_buf, MAX_PROP_LEN); | ||
if (!path) | ||
return; | ||
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chosen = finddevice("/chosen"); | ||
if (!chosen) | ||
chosen = create_node(NULL, "chosen"); | ||
if (!chosen) | ||
return; | ||
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setprop_str(chosen, "linux,stdout-path", path); | ||
} | ||
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void planetcore_set_serial_speed(const char *table) | ||
{ | ||
void *chosen, *stdout; | ||
u64 baud; | ||
u32 baud32; | ||
int len; | ||
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chosen = finddevice("/chosen"); | ||
if (!chosen) | ||
return; | ||
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len = getprop(chosen, "linux,stdout-path", prop_buf, MAX_PROP_LEN); | ||
if (len <= 0) | ||
return; | ||
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stdout = finddevice(prop_buf); | ||
if (!stdout) { | ||
printf("planetcore_set_serial_speed: " | ||
"Bad /chosen/linux,stdout-path.\r\n"); | ||
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return; | ||
} | ||
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if (!planetcore_get_decimal(table, PLANETCORE_KEY_SERIAL_BAUD, | ||
&baud)) { | ||
printf("planetcore_set_serial_speed: No SB tag.\r\n"); | ||
return; | ||
} | ||
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baud32 = baud; | ||
setprop(stdout, "current-speed", &baud32, 4); | ||
} |
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#ifndef _PPC_BOOT_PLANETCORE_H_ | ||
#define _PPC_BOOT_PLANETCORE_H_ | ||
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#include "types.h" | ||
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#define PLANETCORE_KEY_BOARD_TYPE "BO" | ||
#define PLANETCORE_KEY_BOARD_REV "BR" | ||
#define PLANETCORE_KEY_MB_RAM "D1" | ||
#define PLANETCORE_KEY_MAC_ADDR "EA" | ||
#define PLANETCORE_KEY_FLASH_SPEED "FS" | ||
#define PLANETCORE_KEY_IP_ADDR "IP" | ||
#define PLANETCORE_KEY_KB_NVRAM "NV" | ||
#define PLANETCORE_KEY_PROCESSOR "PR" | ||
#define PLANETCORE_KEY_PROC_VARIANT "PV" | ||
#define PLANETCORE_KEY_SERIAL_BAUD "SB" | ||
#define PLANETCORE_KEY_SERIAL_PORT "SP" | ||
#define PLANETCORE_KEY_SWITCH "SW" | ||
#define PLANETCORE_KEY_TEMP_OFFSET "TC" | ||
#define PLANETCORE_KEY_TARGET_IP "TIP" | ||
#define PLANETCORE_KEY_CRYSTAL_HZ "XT" | ||
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/* Prepare the table for processing, by turning all newlines | ||
* into NULL bytes. | ||
*/ | ||
void planetcore_prepare_table(char *table); | ||
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/* Return the value associated with a given key in text, | ||
* decimal, or hex format. | ||
* | ||
* Returns zero/NULL on failure, non-zero on success. | ||
*/ | ||
const char *planetcore_get_key(const char *table, const char *key); | ||
int planetcore_get_decimal(const char *table, const char *key, u64 *val); | ||
int planetcore_get_hex(const char *table, const char *key, u64 *val); | ||
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/* Updates the device tree local-mac-address properties based | ||
* on the EA tag. | ||
*/ | ||
void planetcore_set_mac_addrs(const char *table); | ||
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/* Sets the linux,stdout-path in the /chosen node. This requires the | ||
* linux,planetcore-label property in each serial node. | ||
*/ | ||
void planetcore_set_stdout_path(const char *table); | ||
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/* Sets the current-speed property in the serial node. */ | ||
void planetcore_set_serial_speed(const char *table); | ||
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#endif |