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authorRafal Jaworowski <raj@semihalf.com>2008-01-09 19:39:36 +0100
committerRafal Jaworowski <raj@semihalf.com>2008-01-09 19:39:36 +0100
commit500856eb1707ed17d9204baa61dd59948d3b2899 (patch)
treee29338498cbf1b92ad496271e65934b890115545 /include/api_public.h
parent26a41790f8eba19ad450e18ae91351daf485b3e2 (diff)
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API for external applications.
This is an API for external (standalone) applications running on top of U-Boot, and is meant to be more extensible and robust than the existing jumptable mechanism. It is similar to UNIX syscall approach. See api/README for more details. Included is the demo application using this new framework (api_examples). Please note this is still an experimental feature, and is turned off by default. Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
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diff --git a/include/api_public.h b/include/api_public.h
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+++ b/include/api_public.h
@@ -0,0 +1,102 @@
+#ifndef _API_PUBLIC_H_
+#define _API_PUBLIC_H_
+
+#define API_EINVAL 1 /* invalid argument(s) */
+#define API_ENODEV 2 /* no device */
+#define API_ENOMEM 3 /* no memory */
+#define API_EBUSY 4 /* busy, occupied etc. */
+#define API_EIO 5 /* I/O error */
+
+typedef int (*scp_t)(int, int *, ...);
+
+#define API_SIG_VERSION 1
+#define API_SIG_MAGIC "UBootAPI"
+#define API_SIG_MAGLEN 8
+
+struct api_signature {
+ char magic[API_SIG_MAGLEN]; /* magic string */
+ uint16_t version; /* API version */
+ uint32_t checksum; /* checksum of this sig struct */
+ scp_t syscall; /* entry point to the API */
+};
+
+enum {
+ API_RSVD = 0,
+ API_GETC,
+ API_PUTC,
+ API_TSTC,
+ API_PUTS,
+ API_RESET,
+ API_GET_SYS_INFO,
+ API_UDELAY,
+ API_GET_TIMER,
+ API_DEV_ENUM,
+ API_DEV_OPEN,
+ API_DEV_CLOSE,
+ API_DEV_READ,
+ API_DEV_WRITE,
+ API_ENV_ENUM,
+ API_ENV_GET,
+ API_ENV_SET,
+ API_MAXCALL
+};
+
+#define MR_ATTR_FLASH 0x0001
+#define MR_ATTR_DRAM 0x0002
+#define MR_ATTR_SRAM 0x0003
+
+struct mem_region {
+ unsigned long start;
+ unsigned long size;
+ int flags;
+};
+
+struct sys_info {
+ unsigned long clk_bus;
+ unsigned long clk_cpu;
+ unsigned long bar;
+ struct mem_region *mr;
+ int mr_no; /* number of memory regions */
+};
+
+#undef CFG_64BIT_LBA
+#ifdef CFG_64BIT_LBA
+typedef u_int64_t lbasize_t;
+#else
+typedef unsigned long lbasize_t;
+#endif
+typedef unsigned long lbastart_t;
+
+#define DEV_TYP_NONE 0x0000
+#define DEV_TYP_NET 0x0001
+
+#define DEV_TYP_STOR 0x0002
+#define DT_STOR_IDE 0x0010
+#define DT_STOR_SCSI 0x0020
+#define DT_STOR_USB 0x0040
+#define DT_STOR_MMC 0x0080
+
+#define DEV_STA_CLOSED 0x0000 /* invalid, closed */
+#define DEV_STA_OPEN 0x0001 /* open i.e. active */
+
+struct device_info {
+ int type;
+ void *cookie;
+
+ union {
+ struct {
+ lbasize_t block_count; /* no of blocks */
+ unsigned long block_size; /* size of one block */
+ } storage;
+
+ struct {
+ unsigned char hwaddr[6];
+ } net;
+ } info;
+#define di_stor info.storage
+#define di_net info.net
+
+ int state;
+};
+
+#endif /* _API_PUBLIC_H_ */