131 lines
2.4 KiB
C
131 lines
2.4 KiB
C
#include <stddef.h>
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#include <utils.h>
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#include <string.h>
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#include <uart.h>
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#include <mbox.h>
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#include <shell.h>
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#define INPUT_BUFLEN 1000
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#define PM_PASSWORD 0x5a000000
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#define PM_RSTC 0x3F10001c
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#define PM_WDOG 0x3F100024
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void help (void)
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{
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uart_puts(
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"help : print this help menu" ENDL
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"hello : print Hello World!" ENDL
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"hwinfo: print hardware info" ENDL
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"ls : list directory contents" ENDL
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"cat : concatenate files and print" ENDL
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"reboot: reboot the device" ENDL
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);
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}
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void hello (void)
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{
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uart_puts("hello, world" ENDL);
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}
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void hwinfo (void)
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{
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uart_puts(
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"hwinfo: " ENDL
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"board revision: "
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);
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uart_hex(get_board_revision());
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uart_puts(
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ENDL
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"memory base addr: "
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);
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uart_hex(get_memory_base_addr());
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uart_puts(
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ENDL
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"memory size: "
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);
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uart_hex(get_memory_size());
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uart_puts(ENDL);
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}
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void ls_initrd_callback(file_node_t *tr)
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{
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uart_puts(tr->filename);
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uart_puts(ENDL);
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}
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void ls(file_node_t *root)
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{
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initrd_traverse(root, ls_initrd_callback);
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}
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void cat(file_node_t *root, const char *filename)
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{
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file_node_t *tr = initrd_get(root, filename);
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if (tr) {
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uart_puts((char *)tr->filecontent);
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} else {
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uart_puts("FILE NOT EXIST!" ENDL);
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}
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}
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void set(long addr, unsigned int value) {
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volatile unsigned int* point = (unsigned int*)addr;
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*point = value;
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}
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void reset(int tick) { // reboot after watchdog timer expire
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set(PM_RSTC, PM_PASSWORD | 0x20); // full reset
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set(PM_WDOG, PM_PASSWORD | tick); // number of watchdog tick
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}
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void reboot(void)
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{
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reset(1 << 16);
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}
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int shell(file_node_t *initrd_root)
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{
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uart_puts("# ");
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char buf[INPUT_BUFLEN], ch;
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int sz = 0;
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while ((ch = uart_getc()) != '\n') {
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buf[sz++] = ch;
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uart_send(ch);
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}
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uart_puts(ENDL);
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buf[sz] = '\0';
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const char *i = buf;
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char bin[INPUT_BUFLEN], *j;
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for (j = bin; *i != '\0' && !isspace(*i); ++i, ++j)
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*j = *i;
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*j = '\0';
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for (; *i != '\0' && isspace(*i); ++i);
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char param[INPUT_BUFLEN];
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for (j = param; *i != '\0' && !isspace(*i); ++i, ++j)
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*j = *i;
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*j = '\0';
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if (!strcmp(bin, "help")) {
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help();
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} else if (!strcmp(bin, "hello")) {
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hello();
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} else if (!strcmp(bin, "hwinfo")) {
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hwinfo();
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} else if (!strcmp(bin, "ls")) {
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ls(initrd_root);
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} else if (!strcmp(bin, "cat")) {
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cat(initrd_root, param);
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} else if (!strcmp(bin, "reboot")) {
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reboot();
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}
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return true;
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}
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