Fix for mips GOT relocation bug, NE2000 bugs, add support for qemu -M mips target.
Patch is against U-Boot master branch.
----------------------------------------------------------------------------------
diff --git a/Makefile b/Makefile
index 85885b1..8f650d2 100644
--- a/Makefile
+++ b/Makefile
@@ -2444,6 +2444,12 @@ pb1000_config : unconfig
@echo "#define CONFIG_PB1000 1" >>$(obj)include/config.h
@$(MKCONFIG) -a pb1x00 mips mips pb1x00
+qemu_mips_config : unconfig
+ @mkdir -p $(obj)include
+ @ >$(obj)include/config.h
+ @echo "#define CONFIG_QEMU_MIPS 1" >>$(obj)include/config.h
+ @$(MKCONFIG) -a qemu-mips mips mips qemu-mips
+
#########################################################################
## MIPS64 5Kc
#########################################################################
diff --git a/board/qemu-mips/Makefile b/board/qemu-mips/Makefile
new file mode 100644
index 0000000..23be447
--- /dev/null
+++ b/board/qemu-mips/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, address@hidden.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(BOARD).a
+
+COBJS = $(BOARD).o flash.o
+SOBJS = lowlevel_init.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(OBJS) $(SOBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/qemu-mips/README b/board/qemu-mips/README
new file mode 100644
index 0000000..070c99d
--- /dev/null
+++ b/board/qemu-mips/README
@@ -0,0 +1,11 @@
+By address@hidden 2007-Oct-01
+----------------------------------------
+Qemu is a full system emulator. See
+
+http://fabrice.bellard.free.fr/qemu
+
+Limitations & comments
+----------------------
+Supports the "-m mips" configuration of qemu: serial,NE2000,IDE.
+Support is big endian only for now (or at least this is what I tested).
+Derived from au1x00 with a lot of things cut out.
diff --git a/board/qemu-mips/config.mk b/board/qemu-mips/config.mk
new file mode 100644
index 0000000..39eb60a
--- /dev/null
+++ b/board/qemu-mips/config.mk
@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, address@hidden.
+#
+# 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
+#
+
+#
+# AMD development board AMD Alchemy DbAu1x00, MIPS32 core
+#
+
+# ROM version
+TEXT_BASE = 0xbfc00000
+
+# RAM version
+#TEXT_BASE = 0x80100000
diff --git a/board/qemu-mips/flash.c b/board/qemu-mips/flash.c
new file mode 100644
index 0000000..d419f41
--- /dev/null
+++ b/board/qemu-mips/flash.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, address@hidden.
+ *
+ * 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>
+#if 0
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+#endif
+/*-----------------------------------------------------------------------
+ * flash_init()
+ *
+ * sets up flash_info and returns size of FLASH (bytes)
+ */
+unsigned long flash_init (void)
+{
+ printf ("Skipping flash_init\n");
+ return (0);
+}
+
+int write_buff (/*flash_info_t */ void * info, uchar * src, ulong addr, ulong cnt)
+{
+ printf ("write_buff not implemented\n");
+ return (-1);
+}
diff --git a/board/qemu-mips/lowlevel_init.S b/board/qemu-mips/lowlevel_init.S
new file mode 100644
index 0000000..855e8ab
--- /dev/null
+++ b/board/qemu-mips/lowlevel_init.S
@@ -0,0 +1,47 @@
+/* Memory sub-system initialization code */
+
+#include <config.h>
+#include <version.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+ .text
+ .set noreorder
+ .set mips32
+
+ .globl lowlevel_init
+lowlevel_init:
+
+ /*
+ * Step 2) Establish Status Register
+ * (set BEV, clear ERL, clear EXL, clear IE)
+ */
+ li t1, 0x00400000
+ mtc0 t1, CP0_STATUS
+
+ /*
+ * Step 3) Establish CP0 Config0
+ * (set OD, set K0=3)
+ */
+ li t1, 0x00080003
+ mtc0 t1, CP0_CONFIG
+
+ /*
+ * Step 5) Disable the performance counters
+ */
+ mtc0 zero, CP0_PERFORMANCE
+ nop
+
+ /*
+ * Step 7) Establish Cause
+ * (set IV bit)
+ */
+ li t1, 0x00800000
+ mtc0 t1, CP0_CAUSE
+
+ /* Establish Wired (and Random) */
+ mtc0 zero, CP0_WIRED
+ nop
+
+ j ra
+ nop
diff --git a/board/qemu-mips/qemu-mips.c b/board/qemu-mips/qemu-mips.c
new file mode 100644
index 0000000..76c093c
--- /dev/null
+++ b/board/qemu-mips/qemu-mips.c
@@ -0,0 +1,48 @@
+/*
+ * (C) Copyright 2007
+ * address@hidden
+ *
+ * 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 <command.h>
+#include <asm/mipsregs.h>
+
+long int initdram(int board_type)
+{
+ /* Sdram is setup by assembler code */
+ /* If memory could be changed, we should return the true value here */
+ return MEM_SIZE*1024*1024;
+}
+
+
+int checkboard (void)
+{
+ u32 proc_id;
+
+ proc_id = read_32bit_cp0_register(CP0_PRID);
+
+ switch (proc_id >> 24) {
+ default:
+ printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
+ }
+
+ return 0;
+}
diff --git a/board/qemu-mips/u-boot.lds b/board/qemu-mips/u-boot.lds
new file mode 100644
index 0000000..10c9917
--- /dev/null
+++ b/board/qemu-mips/u-boot.lds
@@ -0,0 +1,69 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk Engineering, <address@hidden>
+ *
+ * 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
+ */
+
+/*
+OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-bigmips")
+*/
+OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips", "elf32-tradbigmips")
+OUTPUT_ARCH(mips)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+
+ . = ALIGN(4);
+ .text :
+ {
+ *(.text)
+ }
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata) }
+
+ . = ALIGN(4);
+ .data : { *(.data) }
+
+ . = ALIGN(4);
+ .sdata : { *(.sdata) }
+
+ _gp = ALIGN(16);
+
+ __got_start = .;
+ .got : { *(.got) }
+ __got_end = .;
+
+ .sdata : { *(.sdata) }
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+ uboot_end_data = .;
+ num_got_entries = (__got_end - __got_start) >> 2;
+
+ . = ALIGN(4);
+ .sbss : { *(.sbss) }
+ .bss : { *(.bss) }
+ uboot_end = .;
+}
diff --git a/cpu/mips/start.S b/cpu/mips/start.S
index e91e213..1e5b302 100644
--- a/cpu/mips/start.S
+++ b/cpu/mips/start.S
@@ -349,6 +349,7 @@ in_ram:
/* Now we want to update GOT.
*/
lw t3, -4(t0) /* t3 <-- num_got_entries */
+ sub t3,2 /* If skipping two entries, adjust length*/
addi t4, gp, 8 /* Skipping first two entries. */
li t2, 2
1:
diff --git a/drivers/ne2000.c b/drivers/ne2000.c
index b7ed876..0bfe74e 100644
--- a/drivers/ne2000.c
+++ b/drivers/ne2000.c
@@ -755,7 +755,7 @@ static void pcnet_reset_8390(void)
#endif
n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD);
- n2k_outb(n2k_inb(nic_base + PCNET_RESET), PCNET_RESET);
+ n2k_outb(n2k_inb(PCNET_RESET), PCNET_RESET);
for (i = 0; i < 100; i++) {
if ((r = (n2k_inb(EN0_ISR) & ENISR_RESET)) != 0)
@@ -833,6 +833,7 @@ static int plen[NB];
static int nrx = 0;
static int pkey = -1;
+static int initialized=0;
void uboot_push_packet_len(int len) {
PRINTK("pushed len = %d, nrx = %d\n", len, nrx);
@@ -846,7 +847,12 @@ void uboot_push_packet_len(int len) {
}
plen[nrx] = len;
dp83902a_recv(&pbuf[nrx*2000], len);
+/*Just pass it to the upper layer*/
+ NetReceive(&pbuf[nrx*2000], plen[nrx]);
+/*eth_rx() was gutted, so this is not needed anymore*/
+#if 0
nrx++;
+#endif
}
void uboot_push_tx_done(int key, int val) {
@@ -903,37 +909,21 @@ int eth_init(bd_t *bd) {
if (dp83902a_init() == false)
return -1;
dp83902a_start(dev_addr);
+ initialized=1;
return 0;
}
void eth_halt() {
PRINTK("### eth_halt\n");
-
- dp83902a_stop();
+ if(initialized)
+ dp83902a_stop();
+ initialized=0;
}
int eth_rx() {
- int j, tmo;
-
- PRINTK("### eth_rx\n");
-
- tmo = get_timer (0) + TOUT * CFG_HZ;
- while(1) {
- dp83902a_poll();
- if (nrx > 0) {
- for(j=0; j<nrx; j++) {
- NetReceive(&pbuf[j*2000], plen[j]);
- }
- nrx = 0;
- return 1;
- }
- if (get_timer (0) >= tmo) {
- printf("timeout during rx\n");
- return 0;
- }
- }
- return 0;
+dp83902a_poll();
+return 1;
}
int eth_send(volatile void *packet, int length) {
diff --git a/drivers/ne2000.h b/drivers/ne2000.h
index 2955533..6c31f47 100644
--- a/drivers/ne2000.h
+++ b/drivers/ne2000.h
@@ -42,7 +42,7 @@ are GPL, so this is, of course, GPL.
this file might be covered by the GNU General Public License.
Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
- at http://sources.redhat.com/ecos/ecos-license/ */
+ at http://sources.redhat.com/ecos/ecos-license/
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