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https://github.com/saymrwulf/pulp-runtime.git
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Add cache linker script
This commit is contained in:
Michael Rogenmoser
parent
7c7ba940a7
commit
7c76aedfd5
2 changed files with 225 additions and 1 deletions
218
kernel/chips/safety-island/link_cache.ld
Normal file
218
kernel/chips/safety-island/link_cache.ld
Normal file
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@ -0,0 +1,218 @@
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OUTPUT_ARCH(riscv)
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ENTRY( _start )
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MEMORY
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{
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LOCAL : ORIGIN = 0x00000004, LENGTH = 0x0001fffc
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L2 : ORIGIN = 0x10000004, LENGTH = 0x00fffffc
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}
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/*
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* This linker script try to put core data in LOCAL private bank0 and core code
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* in LOCAL private bank1 to avoid contention between core code and data
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* as the core has no instruction cache and is so often accessing LOCAL to
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* get instructions. Everything can be shifted in case one bank is full.
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*
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* Cluster code and initialized data are put in L2 to not polute
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* private banks which are quite small, and also avoid contentions between
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* cluster cache refill and FC.
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*/
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SECTIONS
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{
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/*
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* LOCAL PRIVATE
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*
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* Contains FC data
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*/
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.init :
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{
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. = ALIGN(4);
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KEEP( *(.init) )
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} > LOCAL
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.fini :
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{
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. = ALIGN(4);
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KEEP( *(.fini) )
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} > LOCAL
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.preinit_array : {
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. = ALIGN(4);
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PROVIDE_HIDDEN (__preinit_array_start = .);
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KEEP (*(.preinit_array))
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PROVIDE_HIDDEN (__preinit_array_end = .);
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} > LOCAL
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.init_array : {
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. = ALIGN(4);
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PROVIDE_HIDDEN (__init_array_start = .);
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__CTOR_LIST__ = .;
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LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
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KEEP(*(.ctors.start))
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KEEP(*(.ctors))
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array ))
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LONG(0)
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__CTOR_END__ = .;
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PROVIDE_HIDDEN (__init_array_end = .);
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} > LOCAL
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.fini_array : {
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. = ALIGN(4);
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PROVIDE_HIDDEN (__fini_array_start = .);
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__DTOR_LIST__ = .;
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LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
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KEEP(*(.dtors.start))
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KEEP(*(.dtors))
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LONG(0)
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__DTOR_END__ = .;
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KEEP (*(SORT(.fini_array.*)))
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KEEP (*(.fini_array ))
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PROVIDE_HIDDEN (__fini_array_end = .);
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} > LOCAL
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.boot : {
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. = ALIGN(4);
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*(.boot)
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*(.boot.data)
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} > LOCAL
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.rodata : {
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. = ALIGN(4);
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*(.rodata);
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*(.rodata.*)
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*(.srodata);
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*(.srodata.*)
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*(.eh_frame*)
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} > LOCAL
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.got : {
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. = ALIGN(4);
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*(.got.plt) * (.igot.plt) *(.got) *(.igot)
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} > LOCAL
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.shbss : {
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. = ALIGN(4);
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*(.shbss)
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} > LOCAL
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.talias : {
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} > LOCAL
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.gnu.offload_funcs : {
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. = ALIGN(4);
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KEEP(*(.gnu.offload_funcs))
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} > LOCAL
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.gnu.offload_vars : {
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. = ALIGN(4);
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KEEP(*(.gnu.offload_vars))
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} > LOCAL
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.stack : {
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. = ALIGN(4);
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. = ALIGN(16);
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stack_start = .;
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. = . + 0x800;
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stack = .;
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} > LOCAL
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.data : {
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. = ALIGN(4);
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sdata = .;
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_sdata = .;
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*(.data_fc)
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*(.data_fc.*)
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*(.data);
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*(.data.*)
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*(.sdata);
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*(.sdata.*)
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*(.heapl2ram)
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*(.fcTcdm)
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*(.fcTcdm.*)
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*(.fcTcdm_g)
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*(.fcTcdm_g.*)
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. = ALIGN(4);
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edata = .;
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_edata = .;
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} > LOCAL
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.bss : {
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. = ALIGN(8);
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_bss_start = .;
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*(.bss)
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*(.bss.*)
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*(.sbss)
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*(.sbss.*)
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*(COMMON)
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. = ALIGN(4);
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_bss_end = .;
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} > LOCAL
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__l2_priv0_end = ALIGN(4);
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__l2_priv1_end = ALIGN(4);
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/*
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* L2
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*
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* Contains FC code
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*/
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.vectors MAX(0x10000000,ALIGN(256)) :
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{
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__irq_vector_base = .;
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KEEP(*(.vectors))
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} > L2
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.text :
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{
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. = ALIGN(4);
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_stext = .;
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*(.text)
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*(.text.*)
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_etext = .;
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*(.lit)
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*(.shdata)
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_endtext = .;
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. = ALIGN(4);
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} > L2
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/*
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* L2 SHARED BANKS
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*
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* Contains other data such as peripheral data and cluster code and data
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*/
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.l2_data MAX(0x1c010000,ALIGN(4)) :
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{
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. = ALIGN(4);
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*(.l2_data)
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*(.l2_data.*)
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*(.data_fc_shared)
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*(.data_fc_shared.*)
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. = ALIGN(4);
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} > L2
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__l2_shared_end = ALIGN(4);
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}
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@ -8,7 +8,13 @@ PULP_ARCH_OBJDFLAGS ?=
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PULP_CFLAGS += -fdata-sections -ffunction-sections -include chips/safety-island/config.h -I$(PULPRT_HOME)/include/chips/safety-island
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PULP_OMP_CFLAGS += -fopenmp -mnativeomp
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PULP_LDFLAGS += -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -Tchips/safety-island/link.ld -lgcc
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PULP_LDFLAGS += -nostartfiles -nostdlib -Wl,--gc-sections -L$(PULPRT_HOME)/kernel -lgcc
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ifdef SAFED_CACHE
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PULP_LDFLAGS += -Tchips/safety-island/link_cache.ld
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else
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PULP_LDFLAGS += -Tchips/safety-island/link.ld
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endif
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PULP_CC = riscv32-unknown-elf-gcc
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PULP_AR ?= riscv32-unknown-elf-ar
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