initial commit

include/gpio.h

@@ -0,0 +1,46 @@
+#pragma once
+/*
+ * Copyright (C) 2018 bzt (bztsrc@github)
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#define MMIO_BASE       0x3F000000
+
+#define GPFSEL0         ((volatile unsigned int*)(MMIO_BASE+0x00200000))
+#define GPFSEL1         ((volatile unsigned int*)(MMIO_BASE+0x00200004))
+#define GPFSEL2         ((volatile unsigned int*)(MMIO_BASE+0x00200008))
+#define GPFSEL3         ((volatile unsigned int*)(MMIO_BASE+0x0020000C))
+#define GPFSEL4         ((volatile unsigned int*)(MMIO_BASE+0x00200010))
+#define GPFSEL5         ((volatile unsigned int*)(MMIO_BASE+0x00200014))
+#define GPSET0          ((volatile unsigned int*)(MMIO_BASE+0x0020001C))
+#define GPSET1          ((volatile unsigned int*)(MMIO_BASE+0x00200020))
+#define GPCLR0          ((volatile unsigned int*)(MMIO_BASE+0x00200028))
+#define GPLEV0          ((volatile unsigned int*)(MMIO_BASE+0x00200034))
+#define GPLEV1          ((volatile unsigned int*)(MMIO_BASE+0x00200038))
+#define GPEDS0          ((volatile unsigned int*)(MMIO_BASE+0x00200040))
+#define GPEDS1          ((volatile unsigned int*)(MMIO_BASE+0x00200044))
+#define GPHEN0          ((volatile unsigned int*)(MMIO_BASE+0x00200064))
+#define GPHEN1          ((volatile unsigned int*)(MMIO_BASE+0x00200068))
+#define GPPUD           ((volatile unsigned int*)(MMIO_BASE+0x00200094))
+#define GPPUDCLK0       ((volatile unsigned int*)(MMIO_BASE+0x00200098))
+#define GPPUDCLK1       ((volatile unsigned int*)(MMIO_BASE+0x0020009C))

include/initrd.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <stddef.h>
+
+typedef struct {
+  char c_magic[6];
+  char c_ino[8];
+  char c_mode[8];
+  char c_uid[8];
+  char c_gid[8];
+  char c_nlink[8];
+  char c_mtime[8];
+  char c_filesize[8];
+  char c_devmajor[8];
+  char c_devminor[8];
+  char c_rdevmajor[8];
+  char c_rdevminor[8];
+  char c_namesize[8];
+  char c_check[8];
+}__attribute__((packed)) cpio_newc_header_t;
+
+typedef struct file_node {
+  struct file_node *l, *r;
+  int rand;
+  int node_size;
+
+  int ino;
+  int mode;
+  int uid;
+  int gid;
+  int nlink;
+  int mtime;
+  int filesize;
+  int devmajor;
+  int devminor;
+  int rdevmajor;
+  int rdevminor;
+  int namesize;
+
+  char *filename;
+  byte_t *filecontent;
+} file_node_t;
+
+file_node_t *initrd_init(void);
+int initrd_ls(void);
+file_node_t *initrd_get(file_node_t *root, const char *filename);

include/kmalloc.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <stddef.h>
+
+void *simple_alloc(size_t size);
+void *kmalloc(size_t size);
+void kfree(void *ptr);

include/mbox.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2018 bzt (bztsrc@github)
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/* a properly aligned buffer */
+extern volatile unsigned int mbox[36];
+
+#define MBOX_REQUEST    0
+
+/* channels */
+#define MBOX_CH_POWER   0
+#define MBOX_CH_FB      1
+#define MBOX_CH_VUART   2
+#define MBOX_CH_VCHIQ   3
+#define MBOX_CH_LEDS    4
+#define MBOX_CH_BTNS    5
+#define MBOX_CH_TOUCH   6
+#define MBOX_CH_COUNT   7
+#define MBOX_CH_PROP    8
+
+/* tags */
+#define MBOX_TAG_GETSERIAL      0x10004
+#define MBOX_TAG_LAST           0
+#define MBOX_TAG_BOARD_REVISION 0x00010002
+
+int mbox_call(unsigned char ch);
+unsigned int get_board_revision(void);

include/random.h

@@ -0,0 +1,8 @@
+#pragma once
+
+extern const int _random_a;
+extern const int _random_c;
+extern const int _random_m;
+extern int seed;
+
+int random(void);

include/shell.h

@@ -0,0 +1,9 @@
+#pragma once
+
+void help(void);
+void hello(void);
+void hwinfo(void);
+void reboot(void);
+
+int // is continue
+shell(void);

include/stddef.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#define true 1
+#define false 0
+#define ENDL "\r\n"
+
+typedef long unsigned int size_t;
+typedef unsigned char byte_t;
+typedef unsigned long long int uint64_t;

include/string.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <stddef.h>
+
+int strcmp(const char *lhs, const char *rhs);
+void *memcpy(void *dest, const void *src, size_t count);
+void *memzero(void *start, void *end);

include/uart.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <stddef.h>
+
+void uart_init();
+void uart_send(unsigned int c);
+byte_t uart_getb();
+char uart_getc();
+void uart_puts(char *s);
+void uart_hex(unsigned int d);