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-rw-r--r--board/pb1x00/Makefile41
-rw-r--r--board/pb1x00/README63
-rw-r--r--board/pb1x00/config.mk32
-rw-r--r--board/pb1x00/flash.c43
-rw-r--r--board/pb1x00/memsetup.S392
-rw-r--r--board/pb1x00/pb1x00.c115
-rw-r--r--board/pb1x00/u-boot.lds68
7 files changed, 754 insertions, 0 deletions
diff --git a/board/pb1x00/Makefile b/board/pb1x00/Makefile
new file mode 100644
index 0000000..d1cdc6b
--- /dev/null
+++ b/board/pb1x00/Makefile
@@ -0,0 +1,41 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB = lib$(BOARD).a
+
+OBJS = $(BOARD).o flash.o
+SOBJS = memsetup.o
+
+$(LIB): .depend $(OBJS) $(SOBJS)
+ $(AR) crv $@ $(OBJS) $(SOBJS)
+
+#########################################################################
+
+.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/pb1x00/README b/board/pb1x00/README
new file mode 100644
index 0000000..b37ff36
--- /dev/null
+++ b/board/pb1x00/README
@@ -0,0 +1,63 @@
+By Thomas.Lange@corelatus.se 2004-Oct-05
+----------------------------------------
+DbAu1xx0 are development boards from AMD containing
+an Alchemy AU1xx0 series cpu with mips32 core.
+Existing cpu:s are Au1000, Au1100, Au1500 and Au1550
+
+Limitations & comments
+----------------------
+Support was originally big endian only.
+I have not tested, but several u-boot users report working
+configurations in little endian mode.
+
+I named the board dbau1x00, to allow
+support for all three development boards
+( dbau1000, dbau1100 and dbau1500 ).
+Now there is a new board called dbau1550 also, which
+should be supported RSN.
+
+I only have a dbau1000, so my testing is limited
+to this board.
+
+The board has two different flash banks, that can
+be selected via dip switch. This makes it possible
+to test new bootloaders without thrashing the YAMON
+boot loader delivered with board.
+
+NOTE! When you switch between the two boot flashes, the
+base addresses will be swapped.
+Have this in mind when you compile u-boot. TEXT_BASE has
+to match the address where u-boot is located when you
+actually launch.
+
+Ethernet only supported for mac0.
+
+PCMCIA only supported for slot 0, only 3.3V.
+
+PCMCIA IDE tested with Sandisk Compact Flash and
+IBM microdrive.
+
+###################################
+######## NOTE!!!!!! #########
+###################################
+If you partition a disk on another system (e.g. laptop),
+all bytes will be swapped on 16bit level when using
+PCMCIA and running cpu in big endian mode!!!!
+
+This is probably due to an error in Au1000 chip.
+
+Solution:
+
+a) Boot via network and partition disk directly from
+dbau1x00. The endian will then be correct.
+
+b) Partition disk on "laptop" and fill it with all files
+you need. Then write a simple program that endian swaps
+whole disk,
+
+Example:
+Original "laptop" byte order:
+B0 B1 B2 B3 B4 B5 B6 B7 B8 B9...
+
+Dbau1000 byte order will then be:
+B1 B0 B3 B2 B5 B4 B7 B6 B9 B8...
diff --git a/board/pb1x00/config.mk b/board/pb1x00/config.mk
new file mode 100644
index 0000000..396a045
--- /dev/null
+++ b/board/pb1x00/config.mk
@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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 Pb1x00, MIPS32 core
+#
+
+# ROM version
+#TEXT_BASE = 0xbfc00000
+
+# SDRAM version
+TEXT_BASE = 0x83800000
diff --git a/board/pb1x00/flash.c b/board/pb1x00/flash.c
new file mode 100644
index 0000000..3cf29e8
--- /dev/null
+++ b/board/pb1x00/flash.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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>
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/*-----------------------------------------------------------------------
+ * 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 * info, uchar * src, ulong addr, ulong cnt)
+{
+ printf ("write_buff not implemented\n");
+ return (-1);
+}
diff --git a/board/pb1x00/memsetup.S b/board/pb1x00/memsetup.S
new file mode 100644
index 0000000..44f02b9
--- /dev/null
+++ b/board/pb1x00/memsetup.S
@@ -0,0 +1,392 @@
+/* Memory sub-system initialization code */
+
+#include <config.h>
+#include <version.h>
+#include <asm/regdef.h>
+#include <asm/au1x00.h>
+#include <asm/mipsregs.h>
+
+#define AU1500_SYS_ADDR 0xB1900000
+#define sys_endian 0x0038
+#define CP0_Config0 $16
+#define MEM_1MS ((396000000/1000000) * 1000)
+
+ .text
+ .set noreorder
+ .set mips32
+
+ .globl memsetup
+memsetup:
+ /*
+ * Step 1) Establish CPU endian mode.
+ * NOTE: A fair amount of code is necessary on the Pb1000 to
+ * obtain the value of Switch S8.1 which is used to determine
+ * endian at run-time.
+ */
+
+ /* RCE1 */
+ li t0, MEM_STCFG1
+ li t1, 0x00000083
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME1
+ li t1, 0x33030A10
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR1
+ li t1, 0x11803E40
+ sw t1, 0(t0)
+
+ /* Set DSTRB bits so switch will read correctly */
+ li t1, 0xBE00000C
+ lw t2, 0(t1)
+ or t2, t2, 0x00000300
+ sw t2, 0(t1)
+
+ /* Check switch setting */
+ li t1, 0xBE000014
+ lw t2, 0(t1)
+ and t2, t2, 0x00000100
+ bne t2, zero, big_endian
+ nop
+
+little_endian:
+
+ /* Change Au1 core to little endian */
+ li t0, AU1500_SYS_ADDR
+ li t1, 1
+ sw t1, sys_endian(t0)
+ mfc0 t2, CP0_CONFIG
+ mtc0 t2, CP0_CONFIG
+ nop
+ nop
+
+ /* Big Endian is default so nothing to do but fall through */
+
+big_endian:
+
+ /*
+ * 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 4) Disable Watchpoint facilities
+ */
+ li t1, 0x00000000
+ mtc0 t1, CP0_WATCHLO
+ mtc0 t1, CP0_IWATCHLO
+ /*
+ * Step 5) Disable the performance counters
+ */
+ mtc0 zero, CP0_PERFORMANCE
+ nop
+
+ /*
+ * Step 6) Establish EJTAG Debug register
+ */
+ mtc0 zero, CP0_DEBUG
+ nop
+
+ /*
+ * Step 7) Establish Cause
+ * (set IV bit)
+ */
+ li t1, 0x00800000
+ mtc0 t1, CP0_CAUSE
+
+ /* Establish Wired (and Random) */
+ mtc0 zero, CP0_WIRED
+ nop
+
+ /* First setup pll:s to make serial work ok */
+ /* We have a 12 MHz crystal */
+ li t0, SYS_CPUPLL
+ li t1, 0x21 /* 396 MHz */
+ sw t1, 0(t0)
+ sync
+ nop
+ nop
+
+ /* wait 1mS for clocks to settle */
+ li t1, MEM_1MS
+1: add t1, -1
+ bne t1, zero, 1b
+ nop
+ /* Setup AUX PLL */
+ li t0, SYS_AUXPLL
+ li t1, 8 /* 96 MHz */
+ sw t1, 0(t0) /* aux pll */
+ sync
+
+ /* Static memory controller */
+
+ /* RCE0 8MB AMD29D323 Flash */
+ li t0, MEM_STCFG0
+ li t1, 0x00001403
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME0
+ li t1, 0xFFFFFFDD
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR0
+ li t1, 0x11F83FE0
+ sw t1, 0(t0)
+
+ /* RCE1 CPLD Board Logic */
+ li t0, MEM_STCFG1
+ li t1, 0x00000083
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME1
+ li t1, 0x33030A10
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR1
+ li t1, 0x11803E40
+ sw t1, 0(t0)
+
+ /* RCE2 CPLD Board Logic */
+ li t0, MEM_STCFG2
+ li t1, 0x00000004
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME2
+ li t1, 0x08061908
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR2
+ li t1, 0x12A03FC0
+ sw t1, 0(t0)
+
+ /* RCE3 PCMCIA 250ns */
+ li t0, MEM_STCFG3
+ li t1, 0x00000002
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME3
+ li t1, 0x280E3E07
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR3
+ li t1, 0x10000000
+ sw t1, 0(t0)
+
+ sync
+
+ /* Set peripherals to a known state */
+ li t0, IC0_CFG0CLR
+ li t1, 0xFFFFFFFF
+ sw t1, 0(t0)
+
+ li t0, IC0_CFG0CLR
+ sw t1, 0(t0)
+
+ li t0, IC0_CFG1CLR
+ sw t1, 0(t0)
+
+ li t0, IC0_CFG2CLR
+ sw t1, 0(t0)
+
+ li t0, IC0_SRCSET
+ sw t1, 0(t0)
+
+ li t0, IC0_ASSIGNSET
+ sw t1, 0(t0)
+
+ li t0, IC0_WAKECLR
+ sw t1, 0(t0)
+
+ li t0, IC0_RISINGCLR
+ sw t1, 0(t0)
+
+ li t0, IC0_FALLINGCLR
+ sw t1, 0(t0)
+
+ li t0, IC0_TESTBIT
+ li t1, 0x00000000
+ sw t1, 0(t0)
+ sync
+
+ li t0, IC1_CFG0CLR
+ li t1, 0xFFFFFFFF
+ sw t1, 0(t0)
+
+ li t0, IC1_CFG0CLR
+ sw t1, 0(t0)
+
+ li t0, IC1_CFG1CLR
+ sw t1, 0(t0)
+
+ li t0, IC1_CFG2CLR
+ sw t1, 0(t0)
+
+ li t0, IC1_SRCSET
+ sw t1, 0(t0)
+
+ li t0, IC1_ASSIGNSET
+ sw t1, 0(t0)
+
+ li t0, IC1_WAKECLR
+ sw t1, 0(t0)
+
+ li t0, IC1_RISINGCLR
+ sw t1, 0(t0)
+
+ li t0, IC1_FALLINGCLR
+ sw t1, 0(t0)
+
+ li t0, IC1_TESTBIT
+ li t1, 0x00000000
+ sw t1, 0(t0)
+ sync
+
+ li t0, SYS_FREQCTRL0
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, SYS_FREQCTRL1
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, SYS_CLKSRC
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, SYS_PININPUTEN
+ li t1, 0x00000000
+ sw t1, 0(t0)
+ sync
+
+ li t0, 0xB1100100
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, 0xB1400100
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+
+ li t0, SYS_WAKEMSK
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, SYS_WAKESRC
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ /* wait 1mS before setup */
+ li t1, MEM_1MS
+1: add t1, -1
+ bne t1, zero, 1b
+ nop
+
+ /*
+ * Skip memory setup if we are running from memory
+ */
+ li t0, 0x90000000
+ sub t0, ra, t0
+ bltz t0, skip_memsetup
+ nop
+
+ /*
+ * SDCS0 - Not used, for SMROM
+ * SDCS1 - 32MB Micron 48LCBM16A2
+ * SDCS2 - 32MB Micron 48LCBM16A2
+ */
+ li t0, MEM_SDMODE0
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, MEM_SDMODE1
+ li t1, 0x00552229
+ sw t1, 0(t0)
+
+ li t0, MEM_SDMODE2
+ li t1, 0x00552229
+ sw t1, 0(t0)
+
+ li t0, MEM_SDADDR0
+ li t1, 0x00000000
+ sw t1, 0(t0)
+
+ li t0, MEM_SDADDR1
+ li t1, 0x001003F8
+ sw t1, 0(t0)
+
+ li t0, MEM_SDADDR2
+ li t1, 0x001023F8
+ sw t1, 0(t0)
+
+ sync
+
+ li t0, MEM_SDREFCFG
+ li t1, 0x74000c30 /* Disable */
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDPRECMD
+ sw zero, 0(t0)
+ sync
+
+ li t0, MEM_SDAUTOREF
+ sw zero, 0(t0)
+ sync
+ sw zero, 0(t0)
+ sync
+
+ li t0, MEM_SDREFCFG
+ li t1, 0x76000c30 /* Enable */
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDWRMD0
+ li t1, 0x00000023
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDWRMD1
+ li t1, 0x00000023
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDWRMD2
+ li t1, 0x00000023
+ sw t1, 0(t0)
+ sync
+
+ /* wait 1mS after setup */
+ li t1, MEM_1MS
+1: add t1, -1
+ bne t1, zero, 1b
+ nop
+
+skip_memsetup:
+
+ li t0, SYS_PINFUNC
+ li t1, 0/*0x00008080*/
+ sw t1, 0(t0)
+
+ /*
+ li t0, SYS_TRIOUTCLR
+ li t1, 0x00001FFF
+ sw t1, 0(t0)
+
+ li t0, SYS_OUTPUTCLR
+ li t1, 0x00008000
+ sw t1, 0(t0)
+ */
+ sync
+
+ j ra
+ nop
diff --git a/board/pb1x00/pb1x00.c b/board/pb1x00/pb1x00.c
new file mode 100644
index 0000000..40ac2a4
--- /dev/null
+++ b/board/pb1x00/pb1x00.c
@@ -0,0 +1,115 @@
+/*
+ * (C) Copyright 2003
+ * Thomas.Lange@corelatus.se
+ *
+ * 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/au1x00.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 64*1024*1024;
+}
+
+#define BCSR_PCMCIA_PC0DRVEN 0x0010
+#define BCSR_PCMCIA_PC0RST 0x0080
+
+/* In cpu/mips/cpu.c */
+void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
+
+int checkboard (void)
+{
+ u16 status;
+ /* volatile u32 *pcmcia_bcsr = (u32*)(DB1000_BCSR_ADDR+0x10); */
+ volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
+ u32 proc_id;
+
+ *sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
+
+ proc_id = read_32bit_cp0_register(CP0_PRID);
+
+ switch (proc_id >> 24) {
+ case 0:
+ puts ("Board: Pb1000\n");
+ printf ("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
+ (proc_id >> 8) & 0xFF, proc_id & 0xFF);
+ break;
+ case 1:
+ puts ("Board: Pb1500\n");
+ printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
+ (proc_id >> 8) & 0xFF, proc_id & 0xFF);
+ break;
+ case 2:
+ puts ("Board: Pb1100\n");
+ printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
+ (proc_id >> 8) & 0xFF, proc_id & 0xFF);
+ break;
+ default:
+ printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
+ }
+#if defined(CONFIG_IDE_PCMCIA) && 0
+ /* Enable 3.3 V on slot 0 ( VCC )
+ No 5V */
+ status = 4;
+ *pcmcia_bcsr = status;
+
+ status |= BCSR_PCMCIA_PC0DRVEN;
+ *pcmcia_bcsr = status;
+ au_sync();
+
+ udelay(300*1000);
+
+ status |= BCSR_PCMCIA_PC0RST;
+ *pcmcia_bcsr = status;
+ au_sync();
+
+ udelay(100*1000);
+
+ /* PCMCIA is on a 36 bit physical address.
+ We need to map it into a 32 bit addresses */
+
+#if 0
+ /* We dont need theese unless we run whole pcmcia package */
+ write_one_tlb(20, /* index */
+ 0x01ffe000, /* Pagemask, 16 MB pages */
+ CFG_PCMCIA_IO_BASE, /* Hi */
+ 0x3C000017, /* Lo0 */
+ 0x3C200017); /* Lo1 */
+
+ write_one_tlb(21, /* index */
+ 0x01ffe000, /* Pagemask, 16 MB pages */
+ CFG_PCMCIA_ATTR_BASE, /* Hi */
+ 0x3D000017, /* Lo0 */
+ 0x3D200017); /* Lo1 */
+#endif /* 0 */
+ write_one_tlb(22, /* index */
+ 0x01ffe000, /* Pagemask, 16 MB pages */
+ CFG_PCMCIA_MEM_ADDR, /* Hi */
+ 0x3E000017, /* Lo0 */
+ 0x3E200017); /* Lo1 */
+#endif /* CONFIG_IDE_PCMCIA */
+
+ return 0;
+}
diff --git a/board/pb1x00/u-boot.lds b/board/pb1x00/u-boot.lds
new file mode 100644
index 0000000..a2d19a8
--- /dev/null
+++ b/board/pb1x00/u-boot.lds
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk Engineering, <wd@denx.de>
+ *
+ * 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 = .;
+}