1/******************************************************************************
2 *
3 * Filename: env_vars.c
4 *
5 * Instantiation of environment variables, structures, and other globals.
6 *
7 * Revision information:
8 *
9 * 20AUG2004 kb_admin initial creation
10 *
11 * BEGIN_KBDD_BLOCK
12 * No warranty, expressed or implied, is included with this software. It is
13 * provided "AS IS" and no warranty of any kind including statutory or aspects
14 * relating to merchantability or fitness for any purpose is provided. All
15 * intellectual property rights of others is maintained with the respective
16 * owners. This software is not copyrighted and is intended for reference
17 * only.
18 * END_BLOCK
19 *
| 1/******************************************************************************
2 *
3 * Filename: env_vars.c
4 *
5 * Instantiation of environment variables, structures, and other globals.
6 *
7 * Revision information:
8 *
9 * 20AUG2004 kb_admin initial creation
10 *
11 * BEGIN_KBDD_BLOCK
12 * No warranty, expressed or implied, is included with this software. It is
13 * provided "AS IS" and no warranty of any kind including statutory or aspects
14 * relating to merchantability or fitness for any purpose is provided. All
15 * intellectual property rights of others is maintained with the respective
16 * owners. This software is not copyrighted and is intended for reference
17 * only.
18 * END_BLOCK
19 *
|
20 * $FreeBSD: head/sys/boot/arm/at91/bootspi/env_vars.c 161370 2006-08-16 23:39:58Z imp $
| 20 * $FreeBSD: head/sys/boot/arm/at91/bootspi/env_vars.c 163597 2006-10-21 22:44:26Z imp $
|
21 *****************************************************************************/
22
23#include "env_vars.h"
24#include "loader_prompt.h"
25#include "lib.h"
26
27/******************************* GLOBALS *************************************/
28char boot_commands[MAX_BOOT_COMMANDS][MAX_INPUT_SIZE];
29
30char env_table[MAX_ENV_SIZE_BYTES];
31
32extern char BootCommandSection;
33
34/************************** PRIVATE FUNCTIONS ********************************/
35
36
37static int currentIndex;
38static int currentOffset;
39
40
41/*
42 * .KB_C_FN_DEFINITION_START
43 * int ReadCharFromEnvironment(char *)
44 * This private function reads characters from the enviroment variables
45 * to service the command prompt during auto-boot or just to setup the
46 * default environment. Returns positive value if valid character was
47 * set in the pointer. Returns negative value to signal input stream
48 * terminated. Returns 0 to indicate _wait_ condition.
49 * .KB_C_FN_DEFINITION_END
50 */
51static int
52ReadCharFromEnvironment(int timeout)
53{
54 int ch;
55
56 if (currentIndex < MAX_BOOT_COMMANDS) {
57 ch = boot_commands[currentIndex][currentOffset++];
58 if (ch == '\0' || (currentOffset >= MAX_INPUT_SIZE)) {
59 currentOffset = 0;
60 ++currentIndex;
61 ch = '\r';
62 }
63 return (ch);
64 }
65
66 return (-1);
67}
68
69
70/*************************** GLOBAL FUNCTIONS ********************************/
71
72
73/*
74 * .KB_C_FN_DEFINITION_START
75 * void DumpBootCommands(void)
76 * This global function displays the current boot commands.
77 * .KB_C_FN_DEFINITION_END
78 */
79void
80DumpBootCommands(void)
81{
82 int i;
83
84 for (i = 0; boot_commands[i][0]; i++)
| 21 *****************************************************************************/
22
23#include "env_vars.h"
24#include "loader_prompt.h"
25#include "lib.h"
26
27/******************************* GLOBALS *************************************/
28char boot_commands[MAX_BOOT_COMMANDS][MAX_INPUT_SIZE];
29
30char env_table[MAX_ENV_SIZE_BYTES];
31
32extern char BootCommandSection;
33
34/************************** PRIVATE FUNCTIONS ********************************/
35
36
37static int currentIndex;
38static int currentOffset;
39
40
41/*
42 * .KB_C_FN_DEFINITION_START
43 * int ReadCharFromEnvironment(char *)
44 * This private function reads characters from the enviroment variables
45 * to service the command prompt during auto-boot or just to setup the
46 * default environment. Returns positive value if valid character was
47 * set in the pointer. Returns negative value to signal input stream
48 * terminated. Returns 0 to indicate _wait_ condition.
49 * .KB_C_FN_DEFINITION_END
50 */
51static int
52ReadCharFromEnvironment(int timeout)
53{
54 int ch;
55
56 if (currentIndex < MAX_BOOT_COMMANDS) {
57 ch = boot_commands[currentIndex][currentOffset++];
58 if (ch == '\0' || (currentOffset >= MAX_INPUT_SIZE)) {
59 currentOffset = 0;
60 ++currentIndex;
61 ch = '\r';
62 }
63 return (ch);
64 }
65
66 return (-1);
67}
68
69
70/*************************** GLOBAL FUNCTIONS ********************************/
71
72
73/*
74 * .KB_C_FN_DEFINITION_START
75 * void DumpBootCommands(void)
76 * This global function displays the current boot commands.
77 * .KB_C_FN_DEFINITION_END
78 */
79void
80DumpBootCommands(void)
81{
82 int i;
83
84 for (i = 0; boot_commands[i][0]; i++)
|
85 printf("0x%x : %s[E]\r\n", i, boot_commands[i]);
| 85 printf("0x%x : %s[E]\n", i, boot_commands[i]);
|
86}
87
88
89/*
90 * .KB_C_FN_DEFINITION_START
91 * void LoadBootCommands(void)
92 * This global function loads the existing boot commands from raw format and
93 * coverts it to the standard, command-index format. Notice, the processed
94 * boot command table has much more space allocated than the actual table
95 * stored in non-volatile memory. This is because the processed table
96 * exists in RAM which is larger than the non-volatile space.
97 * .KB_C_FN_DEFINITION_END
98 */
99void
100LoadBootCommands(void)
101{
102 int index, j;
103 char *cptr;
104
105 p_memset((char*)boot_commands, 0, sizeof(boot_commands));
106 cptr = &BootCommandSection;
107 for (index = 0; *cptr; index++) {
108 for (j = 0; *cptr; j++)
109 boot_commands[index][j] = *cptr++;
110 cptr++;
111 }
112}
113
114
115/*
116 * .KB_C_FN_DEFINITION_START
117 * void ExecuteEnvironmentFunctions(void)
118 * This global function executes applicable entries in the environment.
119 * .KB_C_FN_DEFINITION_END
120 */
121void
122ExecuteEnvironmentFunctions(void)
123{
124 currentIndex = 0;
125 currentOffset = 0;
126
127 DumpBootCommands();
| 86}
87
88
89/*
90 * .KB_C_FN_DEFINITION_START
91 * void LoadBootCommands(void)
92 * This global function loads the existing boot commands from raw format and
93 * coverts it to the standard, command-index format. Notice, the processed
94 * boot command table has much more space allocated than the actual table
95 * stored in non-volatile memory. This is because the processed table
96 * exists in RAM which is larger than the non-volatile space.
97 * .KB_C_FN_DEFINITION_END
98 */
99void
100LoadBootCommands(void)
101{
102 int index, j;
103 char *cptr;
104
105 p_memset((char*)boot_commands, 0, sizeof(boot_commands));
106 cptr = &BootCommandSection;
107 for (index = 0; *cptr; index++) {
108 for (j = 0; *cptr; j++)
109 boot_commands[index][j] = *cptr++;
110 cptr++;
111 }
112}
113
114
115/*
116 * .KB_C_FN_DEFINITION_START
117 * void ExecuteEnvironmentFunctions(void)
118 * This global function executes applicable entries in the environment.
119 * .KB_C_FN_DEFINITION_END
120 */
121void
122ExecuteEnvironmentFunctions(void)
123{
124 currentIndex = 0;
125 currentOffset = 0;
126
127 DumpBootCommands();
|
128 printf("Autoboot...\r\n");
| 128 printf("Autoboot...\n");
|
129 Bootloader(ReadCharFromEnvironment);
130}
| 129 Bootloader(ReadCharFromEnvironment);
130}
|