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Add ld script for keymap section

This commit is contained in:
tmk 2013-09-03 23:53:19 +09:00
parent 60103a12b2
commit f7395268c0
3 changed files with 284 additions and 8 deletions

View file

@ -119,6 +119,10 @@ COMMAND_ENABLE = yes # Commands for debug and configuration
NKRO_ENABLE = yes # USB Nkey Rollover
# keymap section
EXTRALDFLAGS = -Wl,-Tld_keymap_avr5.x
OPT_DEFS += -DKEYMAP_SECTION
# Search Path
VPATH += $(TARGET_DIR)
VPATH += $(TOP_DIR)
@ -128,4 +132,5 @@ include $(TOP_DIR)/common.mk
include $(TOP_DIR)/rules.mk
debug-on: EXTRAFLAGS += -DDEBUG
#debug-on: EXTRAFLAGS += -DDEBUG -DDEBUG_ACTION
debug-on: all

View file

@ -48,8 +48,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
{ KC_##K70, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_NO } \
}
static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
#ifdef KEYMAP_SECTION
const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS] __attribute__ ((section (".keymap.keymaps"))) = {
#else
static const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS] PROGMEM = {
#endif
/* Layer 0: Default Layer
* ,-----------------------------------------------------------.
* |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =| \| `|
@ -186,7 +189,11 @@ enum macro_id {
/*
* Fn action definition
*/
static const uint16_t PROGMEM fn_actions[] = {
#ifdef KEYMAP_SECTION
const uint16_t fn_actions[] __attribute__ ((section (".keymap.fn_actions"))) = {
#else
static const uint16_t fn_actions[] PROGMEM = {
#endif
[0] = ACTION_DEFAULT_LAYER_SET(0), // Default layer(not used)
[1] = ACTION_LAYER_TAP_TOGGLE(1), // HHKB layer(toggle with 5 taps)
[2] = ACTION_LAYER_TAP_KEY(2, KC_SLASH), // Cursor layer with Slash*
@ -310,10 +317,6 @@ uint8_t keymap_key_to_keycode(uint8_t layer, key_t key)
action_t keymap_fn_to_action(uint8_t keycode)
{
action_t action;
if (FN_INDEX(keycode) < sizeof(fn_actions) / sizeof(fn_actions[0])) {
action.code = pgm_read_word(&fn_actions[FN_INDEX(keycode)]);
} else {
action.code = ACTION_NO;
}
return action;
}

View file

@ -0,0 +1,268 @@
/*
* linker script for configurable keymap
*
* This adds keymap section which places keymap at fixed address and
* is based on binutils-avr ldscripts(/usr/lib/ldscripts/avr5.x).
*/
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:5)
MEMORY
{
/* With keymap section
*
* Flash Map of ATMega32U4(32KB)
* +------------+ 0x0000
* | .vectors |
* | .progmem |
* | .init0-9 | > text region
* | .text |
* | .fini9-0 |
* | |
* |------------| _etext
* | .data |
* | .bss | > data region
* | .noinit |
* | |
* |------------| 0x6800
* | .keymap | > keymap region(2KB)
* |------------| 0x7000
* | bootloader | 4KB
* +------------+ 0x7FFF
*/
text (rx) : ORIGIN = 0, LENGTH = 128K
keymap (rw!x) : ORIGIN = 0x6800, LENGTH = 2K
data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0
eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K
fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K
lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K
signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K
}
SECTIONS
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/* Internal text space or external memory. */
.text :
{
*(.vectors)
KEEP(*(.vectors))
/* For data that needs to reside in the lower 64k of progmem. */
*(.progmem.gcc*)
*(.progmem*)
. = ALIGN(2);
__trampolines_start = . ;
/* The jump trampolines for the 16-bit limited relocs will reside here. */
*(.trampolines)
*(.trampolines*)
__trampolines_end = . ;
/* For future tablejump instruction arrays for 3 byte pc devices.
We don't relax jump/call instructions within these sections. */
*(.jumptables)
*(.jumptables*)
/* For code that needs to reside in the lower 128k progmem. */
*(.lowtext)
*(.lowtext*)
__ctors_start = . ;
*(.ctors)
__ctors_end = . ;
__dtors_start = . ;
*(.dtors)
__dtors_end = . ;
KEEP(SORT(*)(.ctors))
KEEP(SORT(*)(.dtors))
/* From this point on, we don't bother about wether the insns are
below or above the 16 bits boundary. */
*(.init0) /* Start here after reset. */
KEEP (*(.init0))
*(.init1)
KEEP (*(.init1))
*(.init2) /* Clear __zero_reg__, set up stack pointer. */
KEEP (*(.init2))
*(.init3)
KEEP (*(.init3))
*(.init4) /* Initialize data and BSS. */
KEEP (*(.init4))
*(.init5)
KEEP (*(.init5))
*(.init6) /* C++ constructors. */
KEEP (*(.init6))
*(.init7)
KEEP (*(.init7))
*(.init8)
KEEP (*(.init8))
*(.init9) /* Call main(). */
KEEP (*(.init9))
*(.text)
. = ALIGN(2);
*(.text.*)
. = ALIGN(2);
*(.fini9) /* _exit() starts here. */
KEEP (*(.fini9))
*(.fini8)
KEEP (*(.fini8))
*(.fini7)
KEEP (*(.fini7))
*(.fini6) /* C++ destructors. */
KEEP (*(.fini6))
*(.fini5)
KEEP (*(.fini5))
*(.fini4)
KEEP (*(.fini4))
*(.fini3)
KEEP (*(.fini3))
*(.fini2)
KEEP (*(.fini2))
*(.fini1)
KEEP (*(.fini1))
*(.fini0) /* Infinite loop after program termination. */
KEEP (*(.fini0))
_etext = . ;
} > text
.data : AT (ADDR (.text) + SIZEOF (.text))
{
PROVIDE (__data_start = .) ;
*(.data)
*(.data*)
*(.rodata) /* We need to include .rodata here if gcc is used */
*(.rodata*) /* with -fdata-sections. */
*(.gnu.linkonce.d*)
. = ALIGN(2);
_edata = . ;
PROVIDE (__data_end = .) ;
} > data
.bss : AT (ADDR (.bss))
{
PROVIDE (__bss_start = .) ;
*(.bss)
*(.bss*)
*(COMMON)
PROVIDE (__bss_end = .) ;
} > data
__data_load_start = LOADADDR(.data);
__data_load_end = __data_load_start + SIZEOF(.data);
/* Global data not cleared after reset. */
.noinit :
{
PROVIDE (__noinit_start = .) ;
*(.noinit*)
PROVIDE (__noinit_end = .) ;
_end = . ;
PROVIDE (__heap_start = .) ;
} > data
/* keymap region is located at end of flash
* .fn_actions Fn actions definitions
* .keymaps Mapping layers
*/
.keymap :
{
PROVIDE(__keymap_start = .) ;
*(.keymap.fn_actions) /* 32*actions = 64bytes */
. = ALIGN(0x40);
*(.keymap.keymaps) /* rest of .keymap section */
*(.keymap*)
/* . = ALIGN(0x800); */ /* keymap section takes 2KB- */
} > keymap = 0x00 /* zero fill */
.eeprom :
{
*(.eeprom*)
__eeprom_end = . ;
} > eeprom
.fuse :
{
KEEP(*(.fuse))
KEEP(*(.lfuse))
KEEP(*(.hfuse))
KEEP(*(.efuse))
} > fuse
.lock :
{
KEEP(*(.lock*))
} > lock
.signature :
{
KEEP(*(.signature*))
} > signature
/* Stabs debugging sections. */
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.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
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.line 0 : { *(.line) }
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