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>

1 files changed, 258 insertions, 0 deletions

diff --git a/api_examples/demo.c b/api_examples/demo.c
new file mode 100644
index 0000000..a4aeef1
--- /dev/null
+++ b/api_examples/demo.c
@@ -0,0 +1,258 @@
+/*
+ * (C) Copyright 2007 Semihalf
+ *
+ * Written by: Rafal Jaworowski <raj@semihalf.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <linux/types.h>
+#include <api_public.h>
+
+#include "glue.h"
+
+#define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
+
+void	test_dump_si(struct sys_info *);
+void	test_dump_di(int);
+void	test_dump_sig(struct api_signature *);
+
+char buf[2048];
+
+#define WAIT_SECS 5
+
+int main(int argc, char *argv[])
+{
+	int rv = 0;
+	int h, i, j;
+	int devs_no;
+	struct api_signature *sig = NULL;
+	ulong start, now;
+	struct device_info *di;
+
+	if (!api_search_sig(&sig))
+		return -1;
+
+	syscall_ptr = sig->syscall;
+	if (syscall_ptr == NULL)
+		return -2;
+
+	if (sig->version > API_SIG_VERSION)
+		return -3;
+
+	printf("API signature found @%x\n", sig);
+	test_dump_sig(sig);
+
+	printf("\n*** Consumer API test ***\n");
+	printf("syscall ptr 0x%08x@%08x\n", syscall_ptr, &syscall_ptr);
+
+	/* console activities */
+	ub_putc('B');
+
+	printf("*** Press any key to continue ***\n");
+	printf("got char 0x%x\n", ub_getc());
+
+	/* system info */
+	test_dump_si(ub_get_sys_info());
+
+	/* timing */
+	printf("\n*** Timing - wait a couple of secs ***\n");
+	start = ub_get_timer(0);
+	printf("\ntime: start %lu\n\n", start);
+	for (i = 0; i < WAIT_SECS; i++)
+		for (j = 0; j < 1000; j++)
+			ub_udelay(1000);	/* wait 1 ms */
+
+	/* this is the number of milliseconds that passed from ub_get_timer(0) */
+	now = ub_get_timer(start);
+	printf("\ntime: now %lu\n\n", now);
+
+	/* enumerate devices */
+	printf("\n*** Enumerate devices ***\n");
+	devs_no = ub_dev_enum();
+	
+	printf("Number of devices found: %d\n", devs_no);
+	if (devs_no == 0)
+		return -1;
+
+
+	printf("\n*** Show devices ***\n");
+	for (i = 0; i < devs_no; i++) {
+		test_dump_di(i);
+		printf("\n");
+	}
+
+	printf("\n*** Operations on devices ***\n");
+
+	/* test opening a device already opened */
+	h = 0;
+	if ((rv = ub_dev_open(h)) != 0) {
+		errf("open device %d error %d\n", h, rv);
+		return -1;
+	}
+	if ((rv = ub_dev_open(h)) != 0)
+		errf("open device %d error %d\n", h, rv);
+
+	ub_dev_close(h);
+
+	/* test storage */
+	printf("Trying storage devices...\n");
+	for (i = 0; i < devs_no; i++) {
+		di = ub_dev_get(i);
+
+		if (di->type & DEV_TYP_STOR)
+			break;
+
+	}
+	if (i == devs_no)
+		printf("No storage devices available\n");
+	else {
+		if ((rv = ub_dev_open(i)) != 0)
+			errf("open device %d error %d\n", i, rv);
+		else if ((rv = ub_dev_read(i, &buf, 200, 20)) != 0)
+			errf("could not read from device %d, error %d\n", i, rv);
+
+		ub_dev_close(i);
+	}
+
+	/* test networking */
+	printf("Trying network devices...\n");
+	for (i = 0; i < devs_no; i++) {
+		di = ub_dev_get(i);
+
+		if (di->type == DEV_TYP_NET)
+			break;
+
+	}
+	if (i == devs_no)
+		printf("No network devices available\n");
+	else {
+		if ((rv = ub_dev_open(i)) != 0)
+			errf("open device %d error %d\n", i, rv);
+		else if ((rv = ub_dev_send(i, &buf, 2048)) != 0)
+			errf("could not send to device %d, error %d\n", i, rv);
+
+		ub_dev_close(i);
+	}
+
+	if (ub_dev_close(h) != 0)
+		errf("could not close device %d\n", h);
+
+	printf("\n*** Env vars ***\n");
+
+	printf("ethact = %s\n", ub_env_get("ethact"));
+	printf("old fileaddr = %s\n", ub_env_get("fileaddr"));
+	ub_env_set("fileaddr", "deadbeef");
+	printf("new fileaddr = %s\n", ub_env_get("fileaddr"));
+
+	const char *env = NULL;
+
+	while ((env = ub_env_enum(env)) != NULL)
+		printf("%s = %s\n", env, ub_env_get(env));
+
+	/* reset */
+	ub_reset();
+	printf("\nHmm, reset returned...?!\n");
+
+	return rv;
+}
+
+void test_dump_sig(struct api_signature *sig)
+{
+	printf("signature:\n");
+	printf("  version\t= %d\n", sig->version);
+	printf("  checksum\t= 0x%08x\n", sig->checksum);
+	printf("  sc entry\t= 0x%08x\n", sig->syscall);
+}
+
+void test_dump_si(struct sys_info *si)
+{
+	int i;
+
+	printf("sys info:\n");
+	printf("  clkbus\t= 0x%08x\n", si->clk_bus);
+	printf("  clkcpu\t= 0x%08x\n", si->clk_cpu);
+	printf("  bar\t\t= 0x%08x\n", si->bar);
+
+	printf("---\n");
+	for (i = 0; i < si->mr_no; i++) {
+		if (si->mr[i].flags == 0)
+			break;
+
+		printf("  start\t= 0x%08lx\n", si->mr[i].start);
+		printf("  size\t= 0x%08lx\n", si->mr[i].size);
+
+		switch(si->mr[i].flags & 0x000F) {
+			case MR_ATTR_FLASH:
+				printf("  type FLASH\n");
+				break;
+			case MR_ATTR_DRAM:
+				printf("  type DRAM\n");
+				break;
+			case MR_ATTR_SRAM:
+				printf("  type SRAM\n");
+				break;
+			default:
+				printf("  type UNKNOWN\n");
+		}
+		printf("---\n");
+	}
+}
+
+static char * test_stor_typ(int type)
+{
+	if (type & DT_STOR_IDE)
+		return "IDE";
+
+	if (type & DT_STOR_SCSI)
+		return "SCSI";
+
+	if (type & DT_STOR_USB)
+		return "USB";
+
+	if (type & DT_STOR_MMC);
+		return "MMC";
+
+	return "Unknown";
+}
+
+void test_dump_di(int handle)
+{
+	int i;
+	struct device_info *di = ub_dev_get(handle);
+
+	printf("device info (%d):\n", handle);
+	printf("  cookie\t= 0x%08x\n", (uint32_t)di->cookie);
+	printf("  type\t\t= 0x%08x\n", di->type);
+
+	if (di->type == DEV_TYP_NET) {
+		printf("  hwaddr\t= ");
+		for (i = 0; i < 6; i++)
+			printf("%02x ", di->di_net.hwaddr[i]);
+
+		printf("\n");
+
+	} else if (di->type & DEV_TYP_STOR) {
+		printf("  type\t\t= %s\n", test_stor_typ(di->type));
+		printf("  blk size\t\t= %d\n", di->di_stor.block_size);
+		printf("  blk count\t\t= %d\n", di->di_stor.block_count);
+	}
+}