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authoroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-02-28 08:25:46 +0000
committeroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-02-28 08:25:46 +0000
commitd17e1cd93384d56886be7e67cf2b31e97118d811 (patch)
tree119eb57a4a078992cf5e79c4f59c410923e39adb /ecosflash
parent0689e3dd6752f45f493eceb3edf040fbc7849846 (diff)
downloadriscv-openocd-d17e1cd93384d56886be7e67cf2b31e97118d811.zip
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eCos flash driver.
git-svn-id: svn://svn.berlios.de/openocd/trunk@365 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'ecosflash')
-rw-r--r--ecosflash/Makefile11
-rw-r--r--ecosflash/at91eb40a.elfbin0 -> 36832 bytes
-rw-r--r--ecosflash/debug_at91eb40a.elfbin0 -> 49447 bytes
-rw-r--r--ecosflash/flash.S58
-rw-r--r--ecosflash/flash.c72
-rw-r--r--ecosflash/flash.map390
-rw-r--r--ecosflash/notes.txt111
7 files changed, 642 insertions, 0 deletions
diff --git a/ecosflash/Makefile b/ecosflash/Makefile
new file mode 100644
index 0000000..dfff37c
--- /dev/null
+++ b/ecosflash/Makefile
@@ -0,0 +1,11 @@
+# Create OpenOCD eCos flash driver
+# Syntax: make INSTALL_DIR=ecosinstalldir OUTPUT=outputname
+
+include $(INSTALL_DIR)/include/pkgconf/ecos.mak
+
+all:
+ $(ECOS_COMMAND_PREFIX)gcc $(ECOS_GLOBAL_CFLAGS) $(ECOS_GLOBAL_LDFLAGS) -g -o debug_$(OUTPUT).elf -nostdlib flash.S flash.c -Wl,--gc-sections -I$(INSTALL_DIR)/include -Wl,$(INSTALL_DIR)/lib/libtarget.a -Wl,-Map,flash.map
+ cp debug_$(OUTPUT).elf $(OUTPUT).elf
+ $(ECOS_COMMAND_PREFIX)strip $(OUTPUT).elf
+ echo Flash driver $(OUTPUT).elf
+
diff --git a/ecosflash/at91eb40a.elf b/ecosflash/at91eb40a.elf
new file mode 100644
index 0000000..451657a
--- /dev/null
+++ b/ecosflash/at91eb40a.elf
Binary files differ
diff --git a/ecosflash/debug_at91eb40a.elf b/ecosflash/debug_at91eb40a.elf
new file mode 100644
index 0000000..0bada05
--- /dev/null
+++ b/ecosflash/debug_at91eb40a.elf
Binary files differ
diff --git a/ecosflash/flash.S b/ecosflash/flash.S
new file mode 100644
index 0000000..dc30d16
--- /dev/null
+++ b/ecosflash/flash.S
@@ -0,0 +1,58 @@
+/*
+ Jump table for flash driver
+
+ Registers in ARM callling convention is to place args in registers
+ starting at r0.
+
+ So for:
+
+ void foo(int a, int b, int c).
+
+ a=r0
+ b=r1
+ c=r2
+
+
+*/
+ .global _stack_base
+ .global _stack_start
+ .global _workarea
+ .global _start
+ .global _start_bss_clear
+_start:
+ // offset=0
+ // int erase(void *address, int len)
+ ldr sp,=_stack_start
+ bl erase
+ nop // Stop CPU here using hw breakpoint
+
+ // offset=0xc
+ // int program(void *buffer, void *address, int len)
+ ldr sp,=_stack_start
+ bl program
+ nop // Stop CPU here using hw breakpoint
+
+ // offset=0x18
+ ldr r0,=_workarea
+ nop // Stop CPU here using hw breakpoint
+
+ // offset=0x20
+ // int init() - returns error message if the flash chip can't be detected
+ ldr sp,=_stack_start
+ bl init
+ nop // Stop CPU here using hw breakpoint
+
+ .section ".bss"
+ .balign 4
+_stack_base:
+ .rept 4096
+ .byte 0
+ .endr
+_stack_start:
+ .balign 4
+_workarea:
+ .rept 8192
+ .byte 0
+ .endr
+ // NB!!! we clear bss while the stack is in use, so we start BSS clearing here !!! :-)
+_start_bss_clear:
diff --git a/ecosflash/flash.c b/ecosflash/flash.c
new file mode 100644
index 0000000..654273d
--- /dev/null
+++ b/ecosflash/flash.c
@@ -0,0 +1,72 @@
+#include <string.h>
+#define _FLASH_PRIVATE_
+#include <cyg/io/flash.h>
+
+
+
+int myprintf(char *format, ...)
+{
+ return 0;
+}
+
+extern char _start_bss_clear;
+extern char __bss_end__;
+
+int init()
+{
+ // set up runtime environment
+ char *t;
+ for (t=&_start_bss_clear; t<&__bss_end__; t++)
+ {
+ *t=0;
+ }
+ return flash_init((_printf *)&myprintf);
+
+}
+
+
+int checkFlash(void *addr, int len)
+{
+ // Return error for illegal addresses
+ if ((addr<flash_info.start)||(addr>flash_info.end))
+ return FLASH_ERR_INVALID;
+ if ((((cyg_uint8 *)addr)+len)>(cyg_uint8 *)flash_info.end)
+ return FLASH_ERR_INVALID;
+ return FLASH_ERR_OK;
+}
+
+
+int erase(void *address, int len)
+{
+ int retval;
+ void *failAddress;
+
+ retval=checkFlash(address, len);
+ if (retval!=0)
+ return retval;
+
+ retval=init();
+ if (retval!=0)
+ return retval;
+ return flash_erase(address, len, &failAddress);
+}
+
+
+
+extern char _end;
+
+// Data follows immediately after program, long word aligned.
+int program(void *buffer, void *address, int len)
+{
+ int retval;
+ void *failAddress;
+ retval=checkFlash(address, len);
+ if (retval!=0)
+ return retval;
+
+ retval=init();
+ if (retval!=0)
+ return retval;
+ //int flash_program(void *_addr, void *_data, int len, void **err_addr)
+ return flash_program(address, buffer, len, &failAddress);
+}
diff --git a/ecosflash/flash.map b/ecosflash/flash.map
new file mode 100644
index 0000000..d47258b
--- /dev/null
+++ b/ecosflash/flash.map
@@ -0,0 +1,390 @@
+Archive member included because of file (symbol)
+
+/tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o (flash_init)
+/tmp/ecosboard/ecos/install/lib/libtarget.a(devs_flash_arm_eb40a_eb40a_flash.o)
+ /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o) (flash_hwr_init)
+/tmp/ecosboard/ecos/install/lib/libtarget.a(infra_memcpy.o)
+ /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o) (memcpy)
+/tmp/ecosboard/ecos/install/lib/libtarget.a(language_c_libc_string_memcmp.o)
+ /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o) (memcmp)
+
+Memory Configuration
+
+Name Origin Length Attributes
+*default* 0x00000000 0xffffffff
+
+Linker script and memory map
+
+LOAD /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/cccPBW5f.o
+LOAD /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o
+LOAD /tmp/ecosboard/ecos/install/lib/libtarget.a
+ 0x00008000 PROVIDE (__executable_start, 0x8000)
+ 0x00008000 . = 0x8000
+
+.interp
+ *(.interp)
+
+.hash
+ *(.hash)
+
+.dynsym
+ *(.dynsym)
+
+.dynstr
+ *(.dynstr)
+
+.gnu.version
+ *(.gnu.version)
+
+.gnu.version_d
+ *(.gnu.version_d)
+
+.gnu.version_r
+ *(.gnu.version_r)
+
+.rel.dyn
+ *(.rel.init)
+ *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
+ *(.rel.fini)
+ *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
+ *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
+ *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
+ *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
+ *(.rel.ctors)
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+ *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
+
+.rela.dyn
+ *(.rela.init)
+ *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
+ *(.rela.fini)
+ *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
+ *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
+ *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
+ *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
+ *(.rela.ctors)
+ *(.rela.dtors)
+ *(.rela.got)
+ *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
+
+.rel.plt
+ *(.rel.plt)
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+.rela.plt
+ *(.rela.plt)
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+.init
+ *(.init)
+
+.plt
+ *(.plt)
+
+.text 0x00008000 0x6f8
+ *(.text .stub .text.* .gnu.linkonce.t.*)
+ .text 0x00008000 0x34 /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/cccPBW5f.o
+ 0x00008000 _start
+ .text.myprintf
+ 0x00008034 0x10 /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o
+ 0x00008034 myprintf
+ .text.init 0x00008044 0x50 /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o
+ 0x00008044 init
+ .text.erase 0x00008094 0xc0 /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o
+ 0x00008094 erase
+ .text.program 0x00008154 0xc8 /ecos-c/DOCUME~1/oyvind/LOCALS~1/Temp/ccM8Ftqt.o
+ 0x00008154 program
+ .text.flash_init
+ 0x0000821c 0x6c /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ 0x0000821c flash_init
+ .text.flash_dev_query
+ 0x00008288 0x20 /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ 0x00008288 flash_dev_query
+ .text.flash_erase
+ 0x000082a8 0x140 /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ 0x000082a8 flash_erase
+ .text.flash_program
+ 0x000083e8 0x154 /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ 0x000083e8 flash_program
+ .text.flash_hwr_init
+ 0x0000853c 0xa4 /tmp/ecosboard/ecos/install/lib/libtarget.a(devs_flash_arm_eb40a_eb40a_flash.o)
+ 0x0000853c flash_hwr_init
+ .text.flash_hwr_map_error
+ 0x000085e0 0x4 /tmp/ecosboard/ecos/install/lib/libtarget.a(devs_flash_arm_eb40a_eb40a_flash.o)
+ 0x000085e0 flash_hwr_map_error
+ .text.__memcmp
+ 0x000085e4 0x114 /tmp/ecosboard/ecos/install/lib/libtarget.a(language_c_libc_string_memcmp.o)
+ 0x000085e4 memcmp
+ 0x000085e4 __memcmp
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+ *(.glue_7t)
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+ 0x000086f8 flash_query
+
+.2ram.flash_erase_block
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+ .2ram.flash_erase_block
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+ 0x0000874c flash_erase_block
+
+.2ram.flash_program_buf
+ 0x0000897c 0xe8
+ .2ram.flash_program_buf
+ 0x0000897c 0xe8 /tmp/ecosboard/ecos/install/lib/libtarget.a(devs_flash_arm_eb40a_eb40a_flash.o)
+ 0x0000897c flash_program_buf
+
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+ .rodata.supported_devices
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+ *(.debug_varnames)
+
+.stack 0x00080000 0x0
+ 0x00080000 _stack = .
+ *(.stack)
+
+.note.gnu.arm.ident
+ *(.note.gnu.arm.ident)
+
+/DISCARD/
+ *(.note.GNU-stack)
+OUTPUT(debug_eb40a.elf elf32-littlearm)
+
+.debug_ranges 0x00000000 0xb8
+ .debug_ranges 0x00000000 0x18 /tmp/ecosboard/ecos/install/lib/libtarget.a(io_flash_flash.o)
+ .debug_ranges 0x00000018 0x48 /tmp/ecosboard/ecos/install/lib/libtarget.a(devs_flash_arm_eb40a_eb40a_flash.o)
+ .debug_ranges 0x00000060 0x30 /tmp/ecosboard/ecos/install/lib/libtarget.a(infra_memcpy.o)
+ .debug_ranges 0x00000090 0x28 /tmp/ecosboard/ecos/install/lib/libtarget.a(language_c_libc_string_memcmp.o)
diff --git a/ecosflash/notes.txt b/ecosflash/notes.txt
new file mode 100644
index 0000000..2183912
--- /dev/null
+++ b/ecosflash/notes.txt
@@ -0,0 +1,111 @@
+1. GDB startup script for debugging purposes.
+
+# startup script for debugging flash erase
+target remote 10.0.0.56:2001
+monitor halt
+monitor reset
+load
+# stack
+monitor rm 13 0x7000
+# pc
+monitor rm 15 0x8000
+# arg1 to erase()
+monitor rm 0 0x1030000
+# arg2 to erase()
+monitor rm 1 0x10000
+stepi
+
+
+
+2. Uploading flash driver via tftp
+
+
+$ tftp 10.0.0.108
+tftp> binary
+tftp> put at91fr40162.bin 10.0.0.108:/config/flashdriver.bin
+Sent 4048 bytes in 0.1 seconds
+tftp>
+
+
+4. Programming flash
+
+eCosBoard_prog 0x1000000 /config/testdata.bin
+
+
+tftp> put /cygdrive/c/workspace/ecosboard/ecosboard/phi/bootloader/images/bootloader.bin 10.0.0.108:/config/test.bin
+Sent 165724 bytes in 3.9 seconds
+
+
+halt
+reg cpsr 0x000000D3
+mww 0xFFE00020 0x1
+mww 0xFFE00024 0x00000000
+mww 0xFFE00000 0x01002539
+eCosBoard_profile
+eCosBoard_prog /config/test.bin 0x1000000
+eCosBoard_profile_done
+
+
+
+
+set remote memory-write-packet-size fixed
+
+
+set remote memory-write-packet-size 8192
+set remote memory-map-packet on
+target remote 10.0.0.108:3333
+monitor halt
+monitor reg cpsr 0x000000D3
+monitor mww 0xFFE00020 0x1
+monitor mww 0xFFE00024 0x00000000
+monitor mww 0xFFE00000 0x01002539
+
+
+monitor eCosBoard_profile
+load
+monitor eCosBoard_profile_done
+
+
+source /tmp/ecosboard/packages/services/profile/gprof/current/host/gprof.gdb
+gprof_dump
+shell cp gmon.out /tmp/ecosboard/build/src
+echo To view: cd /tmp/ecosboard/build/src && gprof openocd
+
+
+Performance problems:
+
+It seems the problem is that the actual flash programming takes time.
+hal_delay_us() is invoked between each time the
+CPU is polled for whether flash programming has completed.
+
+
+Flat profile:
+
+Each sample counts as 0.01 seconds.
+ % cumulative self self total
+ time seconds seconds calls Ts/call Ts/call name
+ 35.82 37.66 37.66 hal_delay_us
+ 11.90 50.17 12.51 arm7tdmi_clock_out
+ 9.86 60.54 10.37 gdb_get_packet
+ 5.36 66.17 5.63 memcpy
+ 4.34 70.73 4.56 target_buffer_get_u32
+ 3.34 74.25 3.51 embeddedice_read_reg_w_che
+ck
+ 1.39 75.71 1.46 arm7_9_write_memory
+ 1.34 77.11 1.40 cyg_tcp_output
+ 1.33 78.51 1.40 __udivsi3
+ 1.11 79.68 1.17 cyg_tcp_input
+ 1.07 80.80 1.13 arm7tdmi_store_word_regs
+ 0.95 81.81 1.00 __udivdi3
+ 0.95 82.80 1.00 __umodsi3
+ 0.93 83.78 0.98 arm7tdmi_write_core_regs
+ 0.86 84.68 0.91 arm7_9_poll
+ 0.85 85.57 0.89 memset
+ 0.77 86.38 0.81 cyg_splx
+ 0.64 87.05 0.67 cyg_in_cksumdata
+ 0.63 87.71 0.66 openeth_deliver
+ 0.57 88.31 0.60 strstr
+ 0.51 88.85 0.53 eth_drv_recv
+ 0.49 89.36 0.52 cyg_splinternal
+ 0.49 89.88 0.52 cyg_splimp
+ 0.46 90.36 0.48 cyg_ip_input \ No newline at end of file