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esp-open-rtos/ld/eagle.app.v6.ld
Angus Gratton fbea34b07a Linker script: Fix IROM0_LEN calculation 
Use linker script arithmetic (yay?) to calculate flash size in bytes
from FLASH_SIZE in megabits.

Closes #64
2015-11-13 11:25:08 +11:00

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/* This linker script generated from xt-genldscripts.tpp for LSP .
Modified for esp open RTOS, this linker script is no longer the same as the esp_iot_rtos_sdk one.
*/
/* FreeRTOS memory management functions
We link these directly to newlib functions (have to do it at link
time as binary libraries use these symbols too.)
*/
pvPortMalloc = malloc;
vPortFree = free;
/* FreeRTOS lock functions.
Rely on a patch to libc that produces weak linked versions of the
below symbols. Currently treating locking primitives like universal
global critical section rather than individual locks, but this seems
OK from the use cases in newlib.
*/
_lock_acquire = vPortEnterCritical;
_lock_acquire_recursive = vPortEnterCritical;
_lock_try_acquire = vPortEnterCritical;
_lock_try_acquire_recursive = vPortEnterCritical;
_lock_release = vPortExitCritical;
_lock_release_recursive = vPortExitCritical;
/* SDK compatibility */
ets_printf = printf;
/* Evaluate FLASH_SIZE to calculate irom size, etc.
*/
#ifndef OTA
/* IROM0 section sits after other sections in the "v1" non-OTA bootloader image,
so need an 128kB offset to leave room
*/
#define IROM0_OFFSET 0x20000
#else /* OTA */
/* For OTA, IROM0 becomes an actual "section" of the bootloader image,
so we only need to leave space for the second stage bootloader
(0x2000 bytes) and space for the bootloader & section headers (0x10
bytes) */
#define IROM0_OFFSET 0x2010
#if FLASH_SIZE < 16
#error "OTA support currently requires minimum 16 megabit flash"
#endif
#endif
/* Full maximum length of IROM section is length of mappable flash (ie up to 1 megabyte),
minus anything mapped at start, minus single config SDK WiFi config sector at end
*/
#define IROM0_LEN ((0x20000*MIN(FLASH_SIZE,8)) - IROM0_OFFSET - 0x1000)
/* Linker Script for ld -N */
MEMORY
{
dport0_0_seg : org = 0x3FF00000, len = 0x10
dram0_0_seg : org = 0x3FFE8000, len = 0x14000
iram1_0_seg : org = 0x40100000, len = 0x08000
irom0_0_seg : org = 0x40200000+IROM0_OFFSET, len = IROM0_LEN
}
PHDRS
{
dport0_0_phdr PT_LOAD;
dram0_0_phdr PT_LOAD;
dram0_0_bss_phdr PT_LOAD;
iram1_0_phdr PT_LOAD;
irom0_0_phdr PT_LOAD;
}
/* Default entry point: */
ENTRY(call_user_start)
PROVIDE(_memmap_vecbase_reset = 0x40000000);
/* Various memory-map dependent cache attribute settings: */
_memmap_cacheattr_wb_base = 0x00000110;
_memmap_cacheattr_wt_base = 0x00000110;
_memmap_cacheattr_bp_base = 0x00000220;
_memmap_cacheattr_unused_mask = 0xFFFFF00F;
_memmap_cacheattr_wb_trapnull = 0x2222211F;
_memmap_cacheattr_wba_trapnull = 0x2222211F;
_memmap_cacheattr_wbna_trapnull = 0x2222211F;
_memmap_cacheattr_wt_trapnull = 0x2222211F;
_memmap_cacheattr_bp_trapnull = 0x2222222F;
_memmap_cacheattr_wb_strict = 0xFFFFF11F;
_memmap_cacheattr_wt_strict = 0xFFFFF11F;
_memmap_cacheattr_bp_strict = 0xFFFFF22F;
_memmap_cacheattr_wb_allvalid = 0x22222112;
_memmap_cacheattr_wt_allvalid = 0x22222112;
_memmap_cacheattr_bp_allvalid = 0x22222222;
PROVIDE(_memmap_cacheattr_reset = _memmap_cacheattr_wb_trapnull);
SECTIONS
{
.dport0.rodata : ALIGN(4)
{
_dport0_rodata_start = ABSOLUTE(.);
*(.dport0.rodata)
*(.dport.rodata)
_dport0_rodata_end = ABSOLUTE(.);
} >dport0_0_seg :dport0_0_phdr
.dport0.literal : ALIGN(4)
{
_dport0_literal_start = ABSOLUTE(.);
*(.dport0.literal)
*(.dport.literal)
_dport0_literal_end = ABSOLUTE(.);
} >dport0_0_seg :dport0_0_phdr
.dport0.data : ALIGN(4)
{
_dport0_data_start = ABSOLUTE(.);
*(.dport0.data)
*(.dport.data)
_dport0_data_end = ABSOLUTE(.);
} >dport0_0_seg :dport0_0_phdr
.text : ALIGN(4) /* IRAM */
{
_stext = .;
_text_start = ABSOLUTE(.);
. = ALIGN (16);
*(.vecbase.text)
*(.entry.text)
*(.init.literal)
*(.init)
/* esp-open-rtos compiled source files use the .iram1.* section names for IRAM
functions, etc. */
*(.iram1.*)
/* SDK libraries expect their .text sections to link to iram, not irom */
*sdklib*:*(.literal .text .literal.* .text.*)
/* libgcc integer functions also need to be in .text, as some are called before
flash is mapped (also performance)
*/
*libgcc.a:*i3.o(.literal .text .literal.* .text.*)
/* libc also in IRAM */
*libc.a:*malloc.o(.literal .text .literal.* .text.*)
*libc.a:*mallocr.o(.literal .text .literal.* .text.*)
*libc.a:*freer.o(.literal .text .literal.* .text.*)
*libc.a:*memcpy.o(.literal .text .literal.* .text.*)
*libc.a:*memset.o(.literal .text .literal.* .text.*)
*libc.a:*memcmp.o(.literal .text .literal.* .text.*)
*libc.a:*memmove.o(.literal .text .literal.* .text.*)
*libc.a:*rand.o(.literal .text .literal.* .text.*)
*libc.a:*bzero.o(.literal .text .literal.* .text.*)
*libc.a:*lock.o(.literal .text .literal.* .text.*)
*libc.a:*printf.o(.literal .text .literal.* .text.*)
*libc.a:*findfp.o(.literal .text .literal.* .text.*)
*libc.a:*fputwc.o(.literal .text .literal.* .text.*)
/* xthal_set_intset() called from PendSV in NMI context */
*libhal.a:*set_intset.o(.literal .text .literal.* .text.*)
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.fini.literal)
*(.fini)
*(.gnu.version)
_text_end = ABSOLUTE(.);
_etext = .;
} >iram1_0_seg :iram1_0_phdr
.irom0.text : ALIGN(4)
{
_irom0_text_start = ABSOLUTE(.);
/* esp-open-rtos compiled code goes into IROM by default
(except for libgcc which is matched above.)
*/
*(.literal .text .literal.* .text.*)
/* mbedtls rodata */
*mbedtls.a:*.o(.rodata.* .rodata)
/* actual certificate in example (TEMPORARY HACK) */
*:cert.o(.rodata.* .rodata)
/* Anything explicitly marked as "irom" or "irom0" should go here */
*(.irom.* .irom.*.* .irom0.*)
_irom0_text_end = ABSOLUTE(.);
} >irom0_0_seg :irom0_0_phdr
.data : ALIGN(4)
{
_data_start = ABSOLUTE(.);
*(.data)
*(.data.*)
*(.gnu.linkonce.d.*)
*(.data1)
*(.sdata)
*(.sdata.*)
*(.gnu.linkonce.s.*)
*(.sdata2)
*(.sdata2.*)
*(.gnu.linkonce.s2.*)
*(.jcr)
_data_end = ABSOLUTE(.);
} >dram0_0_seg :dram0_0_phdr
.rodata : ALIGN(4)
{
_rodata_start = ABSOLUTE(.);
*(.rodata)
*(.rodata.*)
*(.gnu.linkonce.r.*)
*(.rodata1)
__XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
*(.xt_except_table)
*(.gcc_except_table)
*(.gnu.linkonce.e.*)
*(.gnu.version_r)
*(.eh_frame)
. = (. + 3) & ~ 3;
/* C++ constructor and destructor tables, properly ordered: */
__init_array_start = ABSOLUTE(.);
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
__init_array_end = ABSOLUTE(.);
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
/* C++ exception handlers table: */
__XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
*(.xt_except_desc)
*(.gnu.linkonce.h.*)
__XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
*(.xt_except_desc_end)
*(.dynamic)
*(.gnu.version_d)
. = ALIGN(4); /* this table MUST be 4-byte aligned */
_bss_table_start = ABSOLUTE(.);
LONG(_bss_start)
LONG(_bss_end)
_bss_table_end = ABSOLUTE(.);
_rodata_end = ABSOLUTE(.);
} >dram0_0_seg :dram0_0_phdr
.bss ALIGN(8) (NOLOAD) : ALIGN(4)
{
. = ALIGN (8);
_bss_start = ABSOLUTE(.);
*(.dynsbss)
*(.sbss)
*(.sbss.*)
*(.gnu.linkonce.sb.*)
*(.scommon)
*(.sbss2)
*(.sbss2.*)
*(.gnu.linkonce.sb2.*)
*(.dynbss)
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN (8);
_bss_end = ABSOLUTE(.);
_heap_start = ABSOLUTE(.);
/* _stack_sentry = ALIGN(0x8); */
} >dram0_0_seg :dram0_0_bss_phdr
/* __stack = 0x3ffc8000; */
.lit4 : ALIGN(4)
{
_lit4_start = ABSOLUTE(.);
*(*.lit4)
*(.lit4.*)
*(.gnu.linkonce.lit4.*)
_lit4_end = ABSOLUTE(.);
} >iram1_0_seg :iram1_0_phdr
}
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