firmware: e88 flash linkage

2 files changed, 137 insertions, 2 deletions

diff --git a/src/target/firmware/Makefile b/src/target/firmware/Makefile
index f4aaab50..4d22943d 100644
--- a/src/target/firmware/Makefile
+++ b/src/target/firmware/Makefile
@@ -33,12 +33,13 @@ highram_OBJS=board/compal/start.ram.o board/compal/exceptions_redirected.o board
 # Compal E88
 
 compal_e88_OBJS=$(compal_COMMON_OBJS) board/compal_e88/init.o
-compal_e88_ENVIRONMENTS=$(compal_COMMON_ENVIRONMENTS) e88loader
+compal_e88_ENVIRONMENTS=$(compal_COMMON_ENVIRONMENTS) e88loader e88flash
 
 e88loader_LDS=board/compal_e88/loader.lds
 e88loader_OBJS=board/compal/start.rom.o board/compal/header.o board/compal/exceptions_redirect.o
 
-e88flash_LDS=board/compal_e88/flash.lds board/compal/exceptions_full.o
+e88flash_LDS=board/compal_e88/flash.lds
+e88flash_OBJS=board/compal/start.rom.o board/compal/header.o board/compal/exceptions_redirected.o board/compal/handlers.o
 
 # Compal E99
 
diff --git a/src/target/firmware/board/compal_e88/flash.lds b/src/target/firmware/board/compal_e88/flash.lds
new file mode 100644
index 00000000..cf0f6a41
--- /dev/null
+++ b/src/target/firmware/board/compal_e88/flash.lds
@@ -0,0 +1,134 @@
+/*
+ * Linker script for flashed applications on the Compal E88
+ *
+ * This script creates a binary that can be linked at 0xFFFF, starting
+ * with the second flash page. This is what a phone application or
+ * pure layer1 device uses.
+ *
+ * XXX: interrupts?
+ *
+ */
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+MEMORY
+{
+	LOADR (rx) : ORIGIN = 0x00000000, LENGTH = 0x10000
+    /* 2 MBytes of external flash memory (minus loader) */
+    FLASH (rx) : ORIGIN = 0x00010000, LENGTH = 0x1F0000
+    /* 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
+{
+    /* entrypoint */
+    .text.start : {
+        PROVIDE(_start = .);
+        KEEP(*(.text.start))
+        *(.text.start)
+    } > FLASH
+
+    /* exception vectors from 0x80001c to 0x800034 */
+    .text.exceptions 0x80001c : {
+        KEEP(*(.text.exceptions))
+        * (.text.exceptions)
+        . = ALIGN(4);
+    } > IRAM AT> FLASH
+    PROVIDE(_exceptions = LOADADDR(.text.exceptions));
+
+    /* 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 = .);
+}