[src/trunk]: src/sys/arch/evbarm/stand Add gzboot support for NSLU2. This is...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/356992ac2609
branches:  trunk
changeset: 969224:356992ac2609
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Feb 12 06:57:35 2020 +0000

description:
Add gzboot support for NSLU2.  This is a work-in-progress.  This configuration
follows the existing NSLU2 RedBoot default bootstrap procedure.  (Other
configurations are possible, but not yet implemented.)

diffstat:

 sys/arch/evbarm/stand/board/ixp425_mem.c                    |  95 +++++++++++++
 sys/arch/evbarm/stand/board/nslu2.c                         |  59 ++++++++
 sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/Makefile |  30 ++++
 sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/ldscript |  90 ++++++++++++
 4 files changed, 274 insertions(+), 0 deletions(-)

diffs (290 lines):

diff -r 45880c8a500c -r 356992ac2609 sys/arch/evbarm/stand/board/ixp425_mem.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/stand/board/ixp425_mem.c  Wed Feb 12 06:57:35 2020 +0000
@@ -0,0 +1,95 @@
+/*     $NetBSD: ixp425_mem.c,v 1.1 2020/02/12 06:57:35 thorpej Exp $   */
+
+/*
+ * Copyright (c) 2003 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Steve C. Woodford for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed for the NetBSD Project by
+ *     Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This file provides the mem_init() function for boards using the
+ * Intel IXP425 Network Processor.
+ */
+
+#include <sys/types.h>
+#include <lib/libsa/stand.h>
+
+#include <arm/xscale/ixp425reg.h>
+
+#include "board.h"
+
+#define        MCU_REG_READ(x) (*(volatile uint32_t *)(IXP425_MCU_HWBASE + (x)))
+
+static const uint32_t sdram_64bit[] = {
+       0x00800000,     /* 8M:  One 2M x 32 chip */
+       0x01000000,     /* 16M: Two 2M x 32 chips */
+       0x01000000,     /* 16M: One 4M x 32 chip */
+       0x02000000,     /* 32M: Two 4M x 32 chips */
+       0, 0, 0, 0
+};
+
+static const uint32_t sdram_other[] = {
+       0x02000000,     /*  32M: Two   8M x 16 chips */
+       0x04000000,     /*  64M: Four  8M x 16 chips */
+       0x04000000,     /*  64M: Two  16M x 16 chips */
+       0x08000000,     /* 128M: Four 16M x 16 chips */
+       0x08000000,     /* 128M: Two  32M x 16 chips */
+       0x10000000,     /* 256M: Four 32M x 16 chips */
+       0, 0
+};
+
+void
+mem_init(void)
+{
+       uint32_t sdr_config;
+       uint32_t start, size, heap;
+
+       sdr_config = MCU_REG_READ(MCU_SDR_CONFIG);
+
+       start = 0x00000000;             /* fixed SDRAM base address */
+
+       if (sdr_config & MCU_SDR_CONFIG_64MBIT)
+               size = sdram_64bit[MCU_SDR_CONFIG_MCONF(sdr_config)];
+       else
+               size = sdram_other[MCU_SDR_CONFIG_MCONF(sdr_config)];
+       
+       if (size == 0) {
+               printf("** SDR_CONFIG returns unknown value, using 32M\n");
+               size = 32 * 1024 * 1024;
+       }
+
+       heap = (start + size) - BOARD_HEAP_SIZE;
+
+       printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n",
+           start, (start + size) - 1, heap);
+       setheap((void *)heap, (void *)(start + size - 1));
+}
diff -r 45880c8a500c -r 356992ac2609 sys/arch/evbarm/stand/board/nslu2.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/stand/board/nslu2.c       Wed Feb 12 06:57:35 2020 +0000
@@ -0,0 +1,59 @@
+/*     $NetBSD: nslu2.c,v 1.1 2020/02/12 06:57:35 thorpej Exp $        */
+
+/*
+ * Copyright (c) 2002 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Jason R. Thorpe for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed for the NetBSD Project by
+ *     Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Board initialization routines for the Linksys NSLU2.
+ */
+
+#include <sys/types.h>
+#include <lib/libsa/stand.h>
+
+#include "board.h"
+
+void
+board_init(void)
+{
+
+       mem_init();
+}
+
+void
+board_fini(void)
+{
+
+       /* Nothing to do here. */
+}
diff -r 45880c8a500c -r 356992ac2609 sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/Makefile
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/Makefile       Wed Feb 12 06:57:35 2020 +0000
@@ -0,0 +1,30 @@
+#      $NetBSD: Makefile,v 1.1 2020/02/12 06:57:35 thorpej Exp $
+
+S=     ${.CURDIR}/../../../../..
+
+#
+# This image is for the stock RedBoot configuration.  The self-extracting
+# kernel image is copied from FIS partition 3 (@ 0x50060000) to 0x01d00000
+# by RedBoot.  RedBoot then copies the ramdisk from FIS partition 4
+# (@ 0x50160000) to 0x01000000, and jumps to 0x01d00000.
+#
+# NOTE: While there is room for 3MB of gzboot+compressed kernel at the
+# designationed location in SDRAM, there is only 1MB of space available
+# in FIS partition 3!
+#
+
+PLATFORM= NSLU2
+RELOC= 0x01d00000
+MAXIMAGESIZE= 0                # concatenate
+LOADADDR= 0x00200000
+
+CPPFLAGS+= -DCONSPEED=115200
+CPPFLAGS+= -DCONADDR=0xc8000000UL
+
+CPUFLAGS= -mcpu=xscale
+
+LDSCRIPT= ${.CURDIR}/ldscript
+
+SRCS+= nslu2.c ns16550.c ixp425_mem.c
+
+.include "${S}/arch/evbarm/stand/gzboot/Makefile.gzboot"
diff -r 45880c8a500c -r 356992ac2609 sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/ldscript
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/stand/gzboot/NSLU2_dram_0x01d00000/ldscript       Wed Feb 12 06:57:35 2020 +0000
@@ -0,0 +1,90 @@
+/*     $NetBSD: ldscript,v 1.1 2020/02/12 06:57:35 thorpej Exp $       */
+
+OUTPUT_FORMAT("elf32-bigarm", "elf32-bigarm",
+             "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(SDRAM)
+MEMORY
+{
+  /* RedBoot will copy the gzboot+compressed kernel image from the
+     FIS partition starting @ 0x50060000 to the SDRAM location starting
+     at 0x01d00000.  gzboot will uncompress the kernel to 0x00200000.
+     NOTE: Even though there is room for 3M of gzboot+compressed kernel,
+     there is only room for 1M of this in the FIS partition.  So we declare
+     that same limit for "sdram" to simplify the linker script.  */
+  flash : o = 0x50060000, l = 1M
+  sdram : o = 0x01d00000, l = 1M       /* kernel loads at 0x00200000 */
+}
+SECTIONS
+{
+  SDRAM = 0x01d00000;
+
+  /DISCARD/ : { *(.ARM.attributes*) *(.ARM.exidx) }  
+
+  /* Read-only sections, merged into text segment: */
+  __text_store = SDRAM;
+  .text      :
+  AT (SDRAM)
+  {
+    *(.text)
+    *(.text.*)
+    *(.stub)
+    *(.glue_7t) *(.glue_7)
+    *(.rodata) *(.rodata.*)
+  } > sdram =0
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+  __data_store = SDRAM + SIZEOF(.text);
+  .data    :
+  AT (LOADADDR(.text) + SIZEOF(.text))
+  {
+    __data_start = . ;
+    *(.data)
+    *(.data.*)
+  } > sdram
+  .sdata     : 
+  AT (LOADADDR(.data) + SIZEOF(.data))
+  {
+    *(.sdata) 
+    *(.sdata.*)
+    . = ALIGN(32 / 8);
+  } > sdram
+  _edata = .;
+  PROVIDE (edata = .);
+  __bss_start = .;
+  __bss_start__ = .;
+  .sbss      :
+  AT (ADDR(.sbss))
+  {
+    PROVIDE (__sbss_start = .);
+    PROVIDE (___sbss_start = .);
+    *(.dynsbss)
+    *(.sbss)
+    *(.sbss.*)
+    *(.scommon)
+    PROVIDE (__sbss_end = .);
+    PROVIDE (___sbss_end = .);
+  } > sdram
+  .bss       :
+  AT (ADDR(.bss))
+  {
+   *(.dynbss)
+   *(.bss)
+   *(.bss.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  } > sdram
+  . = ALIGN(32 / 8);
+  _end = .;
+  _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
+  PROVIDE (end = .);
+  .image   (SDRAM + SIZEOF(.text) + SIZEOF(.data) + SIZEOF(.sdata)) :
+  AT (LOADADDR(.sdata) + SIZEOF(.sdata))
+  {
+    *(.image)
+  }
+}