Commit fec60470 authored by Scott Wood's avatar Scott Wood Committed by Paul Mackerras

[POWERPC] bootwrapper: Add PlanetCore firmware support

This is a library that board code can use to extract information from the
PlanetCore configuration keys.  PlanetCore is used on various boards from
Embedded Planet.
Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
Acked-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 27ff35d9
...@@ -45,7 +45,7 @@ src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ ...@@ -45,7 +45,7 @@ src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
ns16550.c serial.c simple_alloc.c div64.S util.S \ ns16550.c serial.c simple_alloc.c div64.S util.S \
gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \ gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \ 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
cpm-serial.c stdlib.c mpc52xx-psc.c cpm-serial.c stdlib.c mpc52xx-psc.c planetcore.c
src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \ src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \
cuboot-ebony.c treeboot-ebony.c prpmc2800.c \ cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \ ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
......
/*
* 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.
*/
#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);
}
void planetcore_set_serial_speed(const char *table)
{
void *chosen, *stdout;
u64 baud;
u32 baud32;
int len;
chosen = finddevice("/chosen");
if (!chosen)
return;
len = getprop(chosen, "linux,stdout-path", prop_buf, MAX_PROP_LEN);
if (len <= 0)
return;
stdout = finddevice(prop_buf);
if (!stdout) {
printf("planetcore_set_serial_speed: "
"Bad /chosen/linux,stdout-path.\r\n");
return;
}
if (!planetcore_get_decimal(table, PLANETCORE_KEY_SERIAL_BAUD,
&baud)) {
printf("planetcore_set_serial_speed: No SB tag.\r\n");
return;
}
baud32 = baud;
setprop(stdout, "current-speed", &baud32, 4);
}
#ifndef _PPC_BOOT_PLANETCORE_H_
#define _PPC_BOOT_PLANETCORE_H_
#include "types.h"
#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"
/* Prepare the table for processing, by turning all newlines
* into NULL bytes.
*/
void planetcore_prepare_table(char *table);
/* 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);
/* Updates the device tree local-mac-address properties based
* on the EA tag.
*/
void planetcore_set_mac_addrs(const char *table);
/* 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);
/* Sets the current-speed property in the serial node. */
void planetcore_set_serial_speed(const char *table);
#endif
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