esp32: add linker script with flash cache support

Now two linker scripts are available: one with flash cache suport,
one without.

Signed-off-by: Gautier Seidel <[email protected]>

Author: gautierseidel

arch/xtensa/soc/esp32/linker.ld

@@ -15,262 +15,9 @@
 #define _ASMLANGUAGE
 
 #include <autoconf.h>
-#include <linker/sections.h>
-#include <linker/linker-defs.h>
-#include <linker/linker-tool.h>
 
-#define RAMABLE_REGION dram0_0_seg :dram0_0_phdr
-/** "ROMABLE_REGION" name is used to be compatible with common-*.ld scripts.
-	However, due to the esp32 architecture, it is mapped to the instruction
-	ram area */
-#define ROMABLE_REGION iram0_0_seg :iram0_0_phdr
-
-PROVIDE ( __stack = 0x3ffe3f20 );
-
-PROVIDE ( esp32_rom_uart_tx_one_char = 0x40009200 );
-PROVIDE ( esp32_rom_uart_rx_one_char = 0x400092d0 );
-PROVIDE ( esp32_rom_uart_attach = 0x40008fd0 );
-PROVIDE ( esp32_rom_intr_matrix_set = 0x4000681c );
-PROVIDE ( esp32_rom_gpio_matrix_in = 0x40009edc );
-PROVIDE ( esp32_rom_gpio_matrix_out = 0x40009f0c );
-PROVIDE ( esp32_rom_Cache_Flush = 0x40009a14 );
-PROVIDE ( esp32_rom_Cache_Read_Enable = 0x40009a84 );
-PROVIDE ( esp32_rom_ets_set_appcpu_boot_addr = 0x4000689c );
-
-MEMORY
-{
-  iram0_0_seg(RX): org = 0x40080000, len = 0x20000
-  iram0_2_seg(RX): org = 0x400D0018, len = 0x330000-18
-  dram0_0_seg(RW): org = 0x3FFB0000, len = 0x2c200
-  drom0_0_seg(R): org = 0x3F400010, len = 0x800000
-  rtc_iram_seg(RWX): org = 0x400C0000, len = 0x2000
-  rtc_slow_seg(RW): org = 0x50000000, len = 0x1000
-#ifdef CONFIG_GEN_ISR_TABLES
-  IDT_LIST(RW): org = 0x3ebfe010, len = 0x2000
+#if (CONFIG_ESP32_FLASH_CACHE == 1)
+#include "linker_flash_cache.ld"
+#else
+#include "linker_no_flash_cache.ld"
 #endif
-}
-
-PHDRS
-{
-  iram0_0_phdr PT_LOAD;
-  dram0_0_phdr PT_LOAD;
-}
-
-/*  Default entry point:  */
-PROVIDE ( _ResetVector = 0x40000400 );
-ENTRY(CONFIG_KERNEL_ENTRY)
-
-_rom_store_table = 0;
-
-PROVIDE(_memmap_vecbase_reset = 0x40000450);
-PROVIDE(_memmap_reset_vector = 0x40000400);
-
-SECTIONS
-{
-  /* RTC fast memory holds RTC wake stub code,
-     including from any source file named rtc_wake_stub*.c
-  */
-  .rtc.text :
-  {
-    . = ALIGN(4);
-    *(.rtc.literal .rtc.text)
-    *rtc_wake_stub*.o(.literal .text .literal.* .text.*)
-  } >rtc_iram_seg
-
-  /* RTC slow memory holds RTC wake stub
-     data/rodata, including from any source file
-     named rtc_wake_stub*.c
-  */
-  .rtc.data :
-  {
-    _rtc_data_start = ABSOLUTE(.);
-    *(.rtc.data)
-    *(.rtc.rodata)
-    *rtc_wake_stub*.o(.data .rodata .data.* .rodata.* .bss .bss.*)
-    _rtc_data_end = ABSOLUTE(.);
-  } > rtc_slow_seg
-
-  /* RTC bss, from any source file named rtc_wake_stub*.c */
-  .rtc.bss (NOLOAD) :
-  {
-    _rtc_bss_start = ABSOLUTE(.);
-    *rtc_wake_stub*.o(.bss .bss.*)
-    *rtc_wake_stub*.o(COMMON)
-    _rtc_bss_end = ABSOLUTE(.);
-  } > rtc_slow_seg
-
-  /* Send .iram0 code to iram */
-  .iram0.vectors : ALIGN(4)
-  {
-    /* Vectors go to IRAM */
-    _init_start = ABSOLUTE(.);
-    /* Vectors according to builds/RF-2015.2-win32/esp108_v1_2_s5_512int_2/config.html */
-    . = 0x0;
-    KEEP(*(.WindowVectors.text));
-    . = 0x180;
-    KEEP(*(.Level2InterruptVector.text));
-    . = 0x1c0;
-    KEEP(*(.Level3InterruptVector.text));
-    . = 0x200;
-    KEEP(*(.Level4InterruptVector.text));
-    . = 0x240;
-    KEEP(*(.Level5InterruptVector.text));
-    . = 0x280;
-    KEEP(*(.DebugExceptionVector.text));
-    . = 0x2c0;
-    KEEP(*(.NMIExceptionVector.text));
-    . = 0x300;
-    KEEP(*(.KernelExceptionVector.text));
-    . = 0x340;
-    KEEP(*(.UserExceptionVector.text));
-    . = 0x3C0;
-    KEEP(*(.DoubleExceptionVector.text));
-    . = 0x400;
-    *(.*Vector.literal)
-
-    *(.UserEnter.literal);
-    *(.UserEnter.text);
-    . = ALIGN (16);
-    *(.entry.text)
-    *(.init.literal)
-    *(.init)
-    _init_end = ABSOLUTE(.);
-
-    /* This goes here, not at top of linker script, so addr2line finds it last,
-       and uses it in preference to the first symbol in IRAM */
-    _iram_start = ABSOLUTE(0);
-  } GROUP_LINK_IN(ROMABLE_REGION)
-
-
-
-  .iram0.text :
-  {
-    /* Code marked as running out of IRAM */
-    _iram_text_start = ABSOLUTE(.);
-    *(.iram1 .iram1.*)
-
-    *(.literal.*_int_handler .text.*_int_handler)
-    *(.literal.*_irq_spurious .text.*_irq_spurious)
-    *(.literal.*i2c_esp32_isr .text.*i2c_esp32_isr)
-
-    kernel/libkernel.a(.literal .text .literal.* .text.*)
-    *(.iram0.literal .iram.literal .iram.text.literal .iram0.text .iram.text)
-    _iram_text_end = ABSOLUTE(.);
-  } GROUP_LINK_IN(ROMABLE_REGION)
-
-  .dram0.data :
-  {
-    _data_start = ABSOLUTE(.);
-    *(.data)
-    *(.data.*)
-    *(.gnu.linkonce.d.*)
-    *(.data1)
-    *(.sdata)
-    *(.sdata.*)
-    *(.gnu.linkonce.s.*)
-    *(.sdata2)
-    *(.sdata2.*)
-    *(.gnu.linkonce.s2.*)
-    KEEP(*(.jcr))
-    *(.dram1 .dram1.*)
-    KEEP(*(SW_ISR_TABLE))
-    _data_end = ABSOLUTE(.);
-    . = ALIGN(4);
-  } GROUP_LINK_IN(RAMABLE_REGION)
-
-  SECTION_PROLOGUE(_RODATA_SECTION_NAME,,ALIGN(4))
-  {
-    _rodata_start = ABSOLUTE(.);
-    *(.rodata)
-    *(.rodata.*)
-    *(.gnu.linkonce.r.*)
-    *(.rodata1)
-    __XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
-    KEEP (*(.xt_except_table))
-    KEEP (*(.gcc_except_table))
-    *(.gnu.linkonce.e.*)
-    *(.gnu.version_r)
-    KEEP (*(.eh_frame))
-    /*  C++ constructor and destructor tables, properly ordered:  */
-    KEEP (*crtbegin.o(.ctors))
-    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-    KEEP (*(SORT(.ctors.*)))
-    KEEP (*(.ctors))
-    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 */
-
-    __devconfig_start = .;
-    *(".devconfig.*")
-    KEEP(*(SORT_BY_NAME(".devconfig*")))
-    __devconfig_end = .;
-
-    __net_l2_start = .;
-    *(".net_l2.init")
-    KEEP(*(SORT_BY_NAME(".net_l2.init*")))
-    __net_l2_end = .;
-
-    _rodata_end = ABSOLUTE(.);
-  } GROUP_LINK_IN(RAMABLE_REGION)
-
-
-  /* Shared RAM */
-  .dram0.bss (NOLOAD) :
-  {
-    . = ALIGN (8);
-    _bss_start = ABSOLUTE(.);
-    *(.dynsbss)
-    *(.sbss)
-    *(.sbss.*)
-    *(.gnu.linkonce.sb.*)
-    *(.scommon)
-    *(.sbss2)
-    *(.sbss2.*)
-    *(.gnu.linkonce.sb2.*)
-    *(.dynbss)
-    *(.bss)
-    *(.bss.*)
-    *(.share.mem)
-    *(.gnu.linkonce.b.*)
-    *(COMMON)
-    . = ALIGN (8);
-    _bss_end = ABSOLUTE(.);
-  } GROUP_LINK_IN(RAMABLE_REGION)
-
-  SECTION_DATA_PROLOGUE(_NOINIT_SECTION_NAME, (NOLOAD),)
-  {
-    . = ALIGN (8);
-    *(.noinit)
-    *(".noinit.*")
-    . = ALIGN (8);
-    _heap_start = ABSOLUTE(.);
-  } GROUP_LINK_IN(RAMABLE_REGION)
-
-#ifdef CONFIG_GEN_ISR_TABLES
-#include <linker/intlist.ld>
-#endif
-
-  .flash.text :
-  {
-    _irom_text_start = ABSOLUTE(.);
-    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
-    *(.irom0.text) /* catch stray ICACHE_RODATA_ATTR */
-    *(.fini.literal)
-    *(.fini)
-    *(.gnu.version)
-    _irom_text_end = ABSOLUTE(.);
-  } >iram0_2_seg
-
-#include <linker/common-ram.ld>
-
-}