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-rw-r--r--Src/osmoconbb/src/target/firmware/board/compal_e88/loader.lds147
1 files changed, 147 insertions, 0 deletions
diff --git a/Src/osmoconbb/src/target/firmware/board/compal_e88/loader.lds b/Src/osmoconbb/src/target/firmware/board/compal_e88/loader.lds
new file mode 100644
index 0000000..a7a001f
--- /dev/null
+++ b/Src/osmoconbb/src/target/firmware/board/compal_e88/loader.lds
@@ -0,0 +1,147 @@
+/*
+ * Linker script for flashed loader on the Compal E88
+ *
+ * This script creates a binary that can replace a standard firmware
+ * located at 0x2000. It works in conjunction with the compal ramloader.
+ *
+ * The interrupt vectors and start address are at known, fixed offsets.
+ *
+ */
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+MEMORY
+{
+ /* 2 MBytes of external flash memory */
+ FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x200000
+ /* 256 kBytes of internal zero-waitstate sram */
+ IRAM (rw) : ORIGIN = 0x00800000, LENGTH = 0x040000
+ /* 256 kBytes of external slow sram */
+ ERAM (rw) : ORIGIN = 0x01000000, LENGTH = 0x040000
+}
+SECTIONS
+{
+ /* Provide symbols for the compal loader */
+ .compal.loader 0x00000000 (NOLOAD) : {
+ _compal_loader_start = .;
+ . = 0x2000;
+ _compal_loader_end = .;
+ } > FLASH
+
+ /* Compal-style image header */
+ .compal.header 0x00002000 : {
+ _compal_header_start = .;
+ KEEP(*(.compal.header))
+ *(.compal.header)
+ . = 0xA0;
+ _compal_header_end = .;
+ } > FLASH
+
+ /* Compal-style vector table */
+ .compal.vectors 0x000020A0 : {
+ PROVIDE(_exceptions = .);
+ KEEP(*(.text.exceptions))
+ *(.text.exceptions)
+ } > FLASH
+
+ /* Compal-style entry point */
+ .text.start 0x000020F8 : {
+ PROVIDE(_start = .);
+ KEEP(*(.text.start))
+ *(.text.start)
+ } > FLASH
+
+ /* code */
+ .text : {
+ /* regular code */
+ *(.text*)
+ /* gcc voodoo */
+ *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
+ } > FLASH
+ PROVIDE(_text_start = ADDR(.text));
+ PROVIDE(_text_end = ADDR(.text) + SIZEOF(.text));
+
+ /* constructor pointers */
+ .ctors : {
+ /* ctor count */
+ LONG(SIZEOF(.ctors) / 4 - 2)
+ /* ctor pointers */
+ KEEP(*(SORT(.ctors)))
+ /* end of list */
+ LONG(0)
+ } > FLASH
+ PROVIDE(_ctor_start = LOADADDR(.ctors));
+ PROVIDE(_ctor_end = LOADADDR(.ctors) + SIZEOF(.ctors));
+
+ /* destructor pointers */
+ .dtors : {
+ /* dtor count */
+ LONG(SIZEOF(.dtors) / 4 - 2)
+ /* dtor pointers */
+ KEEP(*(SORT(.dtors)))
+ /* end of list */
+ LONG(0)
+ } > FLASH
+ PROVIDE(_dtor_start = LOADADDR(.dtors));
+ PROVIDE(_dtor_end = LOADADDR(.dtors) + SIZEOF(.dtors));
+
+ /* read-only data */
+ .rodata : {
+ *(.rodata*)
+ } > FLASH
+ PROVIDE(_rodata_start = ADDR(.rodata));
+ PROVIDE(_rodata_end = ADDR(.rodata) + SIZEOF(.rodata));
+
+ /* pic offset tables */
+ .got : {
+ . = ALIGN(4);
+ *(.got)
+ *(.got.plt) *(.igot.plt) *(.got) *(.igot)
+ . = ALIGN(4);
+ } > FLASH
+ PROVIDE(_got_start = ADDR(.got));
+ PROVIDE(_got_end = ADDR(.got) + SIZEOF(.got));
+
+ /* reserved ram */
+ .compal.reservedram 0x800000 (NOLOAD) : {
+ . = 0xff;
+ } > IRAM
+
+ /* initialized data */
+ .data : AT (LOADADDR(.got) + SIZEOF(.got)) {
+ . = ALIGN(4);
+ *(.data)
+ . = ALIGN(4);
+ } > IRAM
+ PROVIDE(__data_start = LOADADDR(.data));
+ PROVIDE(__data_end = LOADADDR(.data) + SIZEOF(.data));
+ PROVIDE(_data_start = ADDR(.data));
+ PROVIDE(_data_end = ADDR(.data) + SIZEOF(.data));
+
+ /* ram code */
+ .ramtext : AT (LOADADDR(.data) + SIZEOF(.data)) {
+ . = ALIGN(4);
+ *(.ramtext)
+ . = ALIGN(4);
+ } > IRAM
+ PROVIDE(__ramtext_start = LOADADDR(.ramtext));
+ PROVIDE(__ramtext_end = LOADADDR(.ramtext) + SIZEOF(.ramtext));
+ PROVIDE(_ramtext_start = ADDR(.ramtext));
+ PROVIDE(_ramtext_end = ADDR(.ramtext) + SIZEOF(.ramtext));
+
+ /* uninitialized data */
+ .bss (NOLOAD) : {
+ . = ALIGN(4);
+ *(.bss)
+ . = ALIGN(4);
+ } > IRAM
+ PROVIDE(__bss_start = ADDR(.bss));
+ PROVIDE(__bss_end = ADDR(.bss) + SIZEOF(.bss));
+ PROVIDE(_bss_start = __bss_start);
+ PROVIDE(_bss_end = __bss_end);
+
+ /* end of image */
+ . = ALIGN(4);
+ _end = .;
+ PROVIDE(end = .);
+}