[Microblaze][PATCH] part 2
timer support
interrupt controller support
flash support
ethernet support
cache support
board information support
env support
booting image support
adding support for Xilinx ML401
diff --git a/lib_microblaze/board.c b/lib_microblaze/board.c
index 026d247..273d9c4 100644
--- a/lib_microblaze/board.c
+++ b/lib_microblaze/board.c
@@ -1,6 +1,8 @@
/*
+ * (C) Copyright 2007 Michal Simek
* (C) Copyright 2004 Atmark Techno, Inc.
*
+ * Michal SIMEK <monstr@monstr.eu>
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* See file CREDITS for list of people who contributed to this
@@ -13,7 +15,7 @@
*
* 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
+ * 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
@@ -30,8 +32,18 @@
DECLARE_GLOBAL_DATA_PTR;
-const char version_string[] =
- U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
+const char version_string[] = U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ")";
+
+#ifdef CFG_GPIO_0
+extern int gpio_init (void);
+#endif
+#ifdef CFG_INTC_0
+extern int interrupts_init (void);
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_NET)
+extern int eth_init (bd_t * bis);
+extern int getenv_IPaddr (char *);
+#endif
/*
* Begin and End of memory area for malloc(), and current "brk"
@@ -40,6 +52,18 @@
static ulong mem_malloc_end;
static ulong mem_malloc_brk;
+/*
+ * The Malloc area is immediately below the monitor copy in DRAM
+ * aka CFG_MONITOR_BASE - Note there is no need for reloc_off
+ * as our monitory code is run from SDRAM
+ */
+static void mem_malloc_init (void)
+{
+ mem_malloc_end = CFG_MONITOR_BASE + CFG_MONITOR_LEN;
+ mem_malloc_start = CFG_MONITOR_BASE;
+ mem_malloc_brk = mem_malloc_start;
+ memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
+}
void *sbrk (ptrdiff_t increment)
{
@@ -50,7 +74,7 @@
return (NULL);
}
mem_malloc_brk = new;
- return ((void *) old);
+ return ((void *)old);
}
/*
@@ -68,24 +92,36 @@
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
- serial_init, /* serial communications setup */
+ env_init,
+ serial_init,
+#ifdef CFG_GPIO_0
+ gpio_init,
+#endif
+#ifdef CFG_INTC_0
+ interrupts_init,
+#endif
NULL,
};
-void board_init(void)
+void board_init (void)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
-
- /* Pointer is writable since we allocated a register for it. */
- gd = (gd_t *)CFG_GBL_DATA_OFFSET;
- memset((void *)gd, 0, CFG_GBL_DATA_SIZE);
-
- gd->bd = (bd_t *)(gd+1); /* At end of global data */
+ gd = (gd_t *) CFG_GBL_DATA_OFFSET;
+#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
+ ulong flash_size = 0;
+#endif
+ asm ("nop"); /* FIXME gd is not initialize - wait */
+ memset ((void *)gd, 0, CFG_GBL_DATA_SIZE);
+ gd->bd = (bd_t *) (gd + 1); /* At end of global data */
gd->baudrate = CONFIG_BAUDRATE;
-
bd = gd->bd;
bd->bi_baudrate = CONFIG_BAUDRATE;
+ bd->bi_memstart = CFG_SDRAM_BASE;
+ bd->bi_memsize = CFG_SDRAM_SIZE;
+
+ /* Initialise malloc() area */
+ mem_malloc_init ();
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
WATCHDOG_RESET ();
@@ -94,6 +130,37 @@
}
}
+#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
+ bd->bi_flashstart = CFG_FLASH_BASE;
+ if (0 < (flash_size = flash_init ())) {
+ bd->bi_flashsize = flash_size;
+ bd->bi_flashoffset = CFG_FLASH_BASE + flash_size;
+ } else {
+ puts ("Flash init FAILED");
+ bd->bi_flashstart = 0;
+ bd->bi_flashsize = 0;
+ bd->bi_flashoffset = 0;
+ }
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET)
+ char *s, *e;
+ int i;
+ /* board MAC address */
+ s = getenv ("ethaddr");
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+ /* IP Address */
+ bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+ eth_init (bd);
+#endif
+
+ /* relocate environment function pointers etc. */
+ env_relocate ();
+
/* main_loop */
for (;;) {
WATCHDOG_RESET ();
@@ -104,5 +171,5 @@
void hang (void)
{
puts ("### ERROR ### Please RESET the board ###\n");
- for (;;);
+ for (;;) ;
}
diff --git a/lib_microblaze/microblaze_linux.c b/lib_microblaze/microblaze_linux.c
index b3a0815..2c7885c 100644
--- a/lib_microblaze/microblaze_linux.c
+++ b/lib_microblaze/microblaze_linux.c
@@ -1,6 +1,8 @@
/*
+ * (C) Copyright 2007 Michal Simek
* (C) Copyright 2004 Atmark Techno, Inc.
*
+ * Michal SIMEK <monstr@monstr.eu>
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* See file CREDITS for list of people who contributed to this
@@ -13,7 +15,7 @@
*
* 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
+ * 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
@@ -24,8 +26,146 @@
#include <common.h>
#include <command.h>
+#include <image.h>
+#include <zlib.h>
+#include <asm/byteorder.h>
-void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- ulong addr, ulong *len_ptr, int verify)
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+extern image_header_t header; /* from cmd_bootm.c */
+/*cmd_boot.c*/
+extern int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
+
+void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
+ ulong addr, ulong * len_ptr, int verify)
{
+ ulong len = 0, checksum;
+ ulong initrd_start, initrd_end;
+ ulong data;
+ /* First parameter is mapped to $r5 for kernel boot args */
+ void (*theKernel) (char *);
+ image_header_t *hdr = &header;
+ char *commandline = getenv ("bootargs");
+ int i;
+
+ theKernel = (void (*)(char *))ntohl (hdr->ih_ep);
+
+ /* Check if there is an initrd image */
+ if (argc >= 3) {
+ SHOW_BOOT_PROGRESS (9);
+
+ addr = simple_strtoul (argv[2], NULL, 16);
+
+ printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
+
+ /* Copy header so we can blank CRC field for re-calculation */
+ memcpy (&header, (char *)addr, sizeof (image_header_t));
+
+ if (ntohl (hdr->ih_magic) != IH_MAGIC) {
+ printf ("Bad Magic Number\n");
+ SHOW_BOOT_PROGRESS (-10);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ data = (ulong) & header;
+ len = sizeof (image_header_t);
+
+ checksum = ntohl (hdr->ih_hcrc);
+ hdr->ih_hcrc = 0;
+
+ if (crc32 (0, (char *)data, len) != checksum) {
+ printf ("Bad Header Checksum\n");
+ SHOW_BOOT_PROGRESS (-11);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ SHOW_BOOT_PROGRESS (10);
+
+ print_image_hdr (hdr);
+
+ data = addr + sizeof (image_header_t);
+ len = ntohl (hdr->ih_size);
+
+ if (verify) {
+ ulong csum = 0;
+
+ printf (" Verifying Checksum ... ");
+ csum = crc32 (0, (char *)data, len);
+ if (csum != ntohl (hdr->ih_dcrc)) {
+ printf ("Bad Data CRC\n");
+ SHOW_BOOT_PROGRESS (-12);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ printf ("OK\n");
+ }
+
+ SHOW_BOOT_PROGRESS (11);
+
+ if ((hdr->ih_os != IH_OS_LINUX) ||
+ (hdr->ih_arch != IH_CPU_MICROBLAZE) ||
+ (hdr->ih_type != IH_TYPE_RAMDISK)) {
+ printf ("No Linux Microblaze Ramdisk Image\n");
+ SHOW_BOOT_PROGRESS (-13);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ /*
+ * Now check if we have a multifile image
+ */
+ } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
+ ulong tail = ntohl (len_ptr[0]) % 4;
+
+ SHOW_BOOT_PROGRESS (13);
+
+ /* skip kernel length and terminator */
+ data = (ulong) (&len_ptr[2]);
+ /* skip any additional image length fields */
+ for (i = 1; len_ptr[i]; ++i)
+ data += 4;
+ /* add kernel length, and align */
+ data += ntohl (len_ptr[0]);
+ if (tail) {
+ data += 4 - tail;
+ }
+
+ len = ntohl (len_ptr[1]);
+
+ } else {
+ /*
+ * no initrd image
+ */
+ SHOW_BOOT_PROGRESS (14);
+
+ data = 0;
+ }
+
+#ifdef DEBUG
+ if (!data) {
+ printf ("No initrd\n");
+ }
+#endif
+
+ if (data) {
+ initrd_start = data;
+ initrd_end = initrd_start + len;
+ } else {
+ initrd_start = 0;
+ initrd_end = 0;
+ }
+
+ SHOW_BOOT_PROGRESS (15);
+
+#ifdef DEBUG
+ printf ("## Transferring control to Linux (at address %08lx) ...\n",
+ (ulong) theKernel);
+#endif
+
+ theKernel (commandline);
}
diff --git a/lib_microblaze/time.c b/lib_microblaze/time.c
index 12e8488..3fa1b11 100644
--- a/lib_microblaze/time.c
+++ b/lib_microblaze/time.c
@@ -1,6 +1,8 @@
/*
+ * (C) Copyright 2007 Michal Simek
* (C) Copyright 2004 Atmark Techno, Inc.
*
+ * Michal SIMEK <monstr@monstr.eu>
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* See file CREDITS for list of people who contributed to this
@@ -22,6 +24,11 @@
* MA 02111-1307 USA
*/
-void udelay(unsigned long usec)
+#include <common.h>
+
+void udelay (unsigned long usec)
{
+ int i;
+ i = get_timer (0);
+ while ((get_timer (0) - i) < (usec / 1000)) ;
}