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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/rc4/@/boot/arm/at91/bootiic/loader_prompt.c |
/******************************************************************************
*
* Filename: loader_prompt.c
*
* Instantiation of the interactive loader functions.
*
* Revision information:
*
* 20AUG2004 kb_admin initial creation
* 12JAN2005 kb_admin massive changes for tftp, strings, and more
* 05JUL2005 kb_admin save tag address, and set registers on boot
*
* BEGIN_KBDD_BLOCK
* No warranty, expressed or implied, is included with this software. It is
* provided "AS IS" and no warranty of any kind including statutory or aspects
* relating to merchantability or fitness for any purpose is provided. All
* intellectual property rights of others is maintained with the respective
* owners. This software is not copyrighted and is intended for reference
* only.
* END_BLOCK
*
* $FreeBSD: release/9.1.0/sys/boot/arm/at91/bootiic/loader_prompt.c 163596 2006-10-21 22:43:39Z imp $
*****************************************************************************/
#include "at91rm9200_lowlevel.h"
#ifdef SUPPORT_TAG_LIST
#include "tag_list.h"
#endif
#include "emac.h"
#include "loader_prompt.h"
#include "env_vars.h"
#include "lib.h"
/******************************* GLOBALS *************************************/
/*********************** PRIVATE FUNCTIONS/DATA ******************************/
static char inputBuffer[MAX_INPUT_SIZE];
static int buffCount;
// argv pointer are either NULL or point to locations in inputBuffer
static char *argv[MAX_COMMAND_PARAMS];
static const char *backspaceString = "\010 \010";
static const command_entry_t CommandTable[] = {
{COMMAND_COPY, "c"},
{COMMAND_DUMP, "d"},
{COMMAND_EXEC, "e"},
{COMMAND_HELP, "?"},
{COMMAND_LOCAL_IP, "ip"},
{COMMAND_MAC, "m"},
{COMMAND_SERVER_IP, "server_ip"},
{COMMAND_SET, "s"},
#ifdef SUPPORT_TAG_LIST
{COMMAND_TAG, "t"},
#endif
{COMMAND_TFTP, "tftp"},
{COMMAND_WRITE, "w"},
{COMMAND_XMODEM, "x"},
{COMMAND_FINAL_FLAG, 0}
};
static unsigned tagAddress;
/*
* .KB_C_FN_DEFINITION_START
* unsigned BuildIP(void)
* This private function packs the test IP info to an unsigned value.
* .KB_C_FN_DEFINITION_END
*/
static unsigned
BuildIP(void)
{
return ((p_ASCIIToDec(argv[1]) << 24) |
(p_ASCIIToDec(argv[2]) << 16) |
(p_ASCIIToDec(argv[3]) << 8) |
p_ASCIIToDec(argv[4]));
}
/*
* .KB_C_FN_DEFINITION_START
* int StringToCommand(char *cPtr)
* This private function converts a command string to a command code.
* .KB_C_FN_DEFINITION_END
*/
static int
StringToCommand(char *cPtr)
{
int i;
for (i = 0; CommandTable[i].command != COMMAND_FINAL_FLAG; ++i)
if (!strcmp(CommandTable[i].c_string, cPtr))
return (CommandTable[i].command);
return (COMMAND_INVALID);
}
/*
* .KB_C_FN_DEFINITION_START
* void RestoreSpace(int)
* This private function restores NULL characters to spaces in order to
* process the remaining args as a string. The number passed is the argc
* of the first entry to begin restoring space in the inputBuffer.
* .KB_C_FN_DEFINITION_END
*/
static void
RestoreSpace(int startArgc)
{
char *cPtr;
for (startArgc++; startArgc < MAX_COMMAND_PARAMS; startArgc++) {
if ((cPtr = argv[startArgc]))
*(cPtr - 1) = ' ';
}
}
/*
* .KB_C_FN_DEFINITION_START
* int BreakCommand(char *)
* This private function splits the buffer into separate strings as pointed
* by argv and returns the number of parameters (< 0 on failure).
* .KB_C_FN_DEFINITION_END
*/
static int
BreakCommand(char *buffer)
{
int pCount, cCount, state;
state = pCount = 0;
p_memset((char*)argv, 0, sizeof(argv));
for (cCount = 0; cCount < MAX_INPUT_SIZE; ++cCount) {
if (!state) {
/* look for next command */
if (!p_IsWhiteSpace(buffer[cCount])) {
argv[pCount++] = &buffer[cCount];
state = 1;
} else {
buffer[cCount] = 0;
}
} else {
/* in command, find next white space */
if (p_IsWhiteSpace(buffer[cCount])) {
buffer[cCount] = 0;
state = 0;
}
}
if (pCount >= MAX_COMMAND_PARAMS) {
return (-1);
}
}
return (pCount);
}
/*
* .KB_C_FN_DEFINITION_START
* void ParseCommand(char *)
* This private function executes matching functions.
* .KB_C_FN_DEFINITION_END
*/
static void
ParseCommand(char *buffer)
{
int argc, i;
if ((argc = BreakCommand(buffer)) < 1)
return;
switch (StringToCommand(argv[0])) {
case COMMAND_COPY:
{
// "c <to> <from> <size in bytes>"
// copy memory
char *to, *from;
unsigned size;
if (argc > 3) {
to = (char *)p_ASCIIToHex(argv[1]);
from = (char *)p_ASCIIToHex(argv[2]);
size = p_ASCIIToHex(argv[3]);
memcpy(to, from, size);
}
break;
}
case COMMAND_DUMP:
// display boot commands
DumpBootCommands();
break;
case COMMAND_EXEC:
{
// "e <address>"
// execute at address
void (*execAddr)(unsigned, unsigned, unsigned);
if (argc > 1) {
/* in future, include machtypes (MACH_KB9200 = 612) */
execAddr = (void (*)(unsigned, unsigned, unsigned))
p_ASCIIToHex(argv[1]);
(*execAddr)(0, 612, tagAddress);
}
break;
}
case COMMAND_TFTP:
{
// "tftp <local_dest_addr filename>"
// tftp download
unsigned address = 0;
if (argc > 2)
address = p_ASCIIToHex(argv[1]);
TFTP_Download(address, argv[2]);
break;
}
case COMMAND_SERVER_IP:
// "server_ip <server IP 192 200 1 20>"
// set download server address
if (argc > 4)
SetServerIPAddress(BuildIP());
break;
case COMMAND_HELP:
// dump command info
printf("Commands:\n"
"\tc\n"
"\td\n"
"\te\n"
"\tip\n"
"\tserver_ip\n"
"\tm\n"
"\ttftp\n"
"\ts\n"
#ifdef SUPPORT_TAG_LIST
"\tt\n"
#endif
"\tw\n"
"\tx\n");
break;
case COMMAND_LOCAL_IP:
// "local_ip <local IP 192 200 1 21>
// set ip of this module
if (argc > 4)
SetLocalIPAddress(BuildIP());
break;
case COMMAND_MAC:
{
// "m <mac address 12 34 56 78 9a bc>
// set mac address using 6 byte values
unsigned char mac[6];
if (argc > 6) {
for (i = 0; i < 6; i++)
mac[i] = p_ASCIIToHex(argv[i + 1]);
EMAC_SetMACAddress(mac);
}
break;
}
case COMMAND_SET:
{
// s <index> <new boot command>
// set the boot command at index (0-based)
unsigned index;
if (argc > 1) {
RestoreSpace(2);
index = p_ASCIIToHex(argv[1]);
SetBootCommand(index, argv[2]);
}
break;
}
#ifdef SUPPORT_TAG_LIST
case COMMAND_TAG:
// t <address> <boot command line>
// create tag-list for linux boot
if (argc > 2) {
RestoreSpace(2);
tagAddress = p_ASCIIToHex(argv[1]);
InitTagList(argv[2], (void*)tagAddress);
}
break;
#endif
case COMMAND_WRITE:
// write the command table to non-volatile
WriteCommandTable();
break;
case COMMAND_XMODEM:
{
// "x <address>"
// download X-modem record at address
if (argc > 1)
xmodem_rx((char *)p_ASCIIToHex(argv[1]));
break;
}
default:
break;
}
printf("\n");
}
/*
* .KB_C_FN_DEFINITION_START
* void ServicePrompt(char)
* This private function process each character checking for valid commands.
* This function is only executed if the character is considered valid.
* Each command is terminated with NULL (0) or ''.
* .KB_C_FN_DEFINITION_END
*/
static void
ServicePrompt(char p_char)
{
if (p_char == '\r')
p_char = 0;
if (p_char == '\010') {
if (buffCount) {
/* handle backspace BS */
inputBuffer[--buffCount] = 0;
printf(backspaceString);
}
return;
}
if (buffCount < MAX_INPUT_SIZE - 1) {
inputBuffer[buffCount++] = p_char;
putchar(p_char);
}
if (!p_char) {
printf("\n");
ParseCommand(inputBuffer);
p_memset(inputBuffer, 0, MAX_INPUT_SIZE);
buffCount = 0;
printf("\n>");
}
}
/* ************************** GLOBAL FUNCTIONS ********************************/
/*
* .KB_C_FN_DEFINITION_START
* void Bootloader(void *inputFunction)
* This global function is the entry point for the bootloader. If the
* inputFunction pointer is NULL, the loader input will be serviced from
* the uart. Otherwise, inputFunction is called to get characters which
* the loader will parse.
* .KB_C_FN_DEFINITION_END
*/
void
Bootloader(int(*inputFunction)(int))
{
int ch = 0;
p_memset((void*)inputBuffer, 0, sizeof(inputBuffer));
buffCount = 0;
if (!inputFunction) {
inputFunction = getc;
}
printf("\n>");
while (1)
if ((ch = ((*inputFunction)(0))) > 0)
ServicePrompt(ch);
}