commit
7ef51e30e9
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@ -28,7 +28,8 @@ MEMORY
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/* rom is really the shadow region that points to SPI flash or elsewhere */
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rom (rx) : ORIGIN = 0x00000000, LENGTH = 1M
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ram (rwx) : ORIGIN = 0x10000000, LENGTH = 128K
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/* there are some additional RAM regions */
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/* there are some additional RAM regions for data */
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ram_data (rw) : ORIGIN = 0x10080000, LENGTH = 72K
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}
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/* Include the common ld script. */
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@ -155,5 +155,6 @@
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void gpio_set(u32 gpioport, u32 gpios);
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void gpio_clear(u32 gpioport, u32 gpios);
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void gpio_toggle(u32 gpioport, u32 gpios);
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#endif
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@ -25,7 +25,7 @@ PREFIX ?= arm-none-eabi
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#PREFIX ?= arm-elf
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CC = $(PREFIX)-gcc
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AR = $(PREFIX)-ar
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CFLAGS = -O2 -g -Wall -Wextra -I../../include -fno-common \
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CFLAGS = -O2 -g3 -Wall -Wextra -I../../include -fno-common \
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-mcpu=cortex-m4 -mthumb -Wstrict-prototypes \
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-ffunction-sections -fdata-sections -MD \
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-mfloat-abi=hard -mfpu=fpv4-sp-d16
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@ -26,5 +26,10 @@ void gpio_set(u32 gpioport, u32 gpios)
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void gpio_clear(u32 gpioport, u32 gpios)
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{
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GPIO_CLR(gpioport) = gpios;
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GPIO_CLR(gpioport) = gpios;
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}
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void gpio_toggle(u32 gpioport, u32 gpios)
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{
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GPIO_NOT(gpioport) = gpios;
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}
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@ -36,7 +36,7 @@ SECTIONS
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.text : {
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. = ALIGN(0x400);
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_text_ram = . + ORIGIN(ram); /* Start of Code in RAM */
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_text_ram = (. - ORIGIN(rom)) + ORIGIN(ram); /* Start of Code in RAM */
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*(.vectors) /* Vector table */
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*(.text*) /* Program code */
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@ -53,29 +53,29 @@ SECTIONS
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__exidx_end = .;
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_etext = .;
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_etext_ram = . + ORIGIN(ram);
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_etext_rom = . + ORIGIN(rom_flash);
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. = ORIGIN(ram);
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_etext_ram = (. - ORIGIN(rom)) + ORIGIN(ram);
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_etext_rom = (. - ORIGIN(rom)) + ORIGIN(rom_flash);
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.data : {
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_data = .;
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*(.data*) /* Read-write initialized data */
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. = ALIGN(4);
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_edata = .;
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} >ram AT >rom
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} >ram_data AT >rom
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.bss : {
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. = _edata;
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*(.bss*) /* Read-write zero initialized data */
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*(COMMON)
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. = ALIGN(4);
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_ebss = .;
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} >ram
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} >ram_data
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/* exception unwind data - required due to libgcc.a issuing /0 exceptions */
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.ARM.extab : {
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. = _ebss;
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*(.ARM.extab*)
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} >ram
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} >ram_data
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/*
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* The .eh_frame section appears to be used for C++ exception handling.
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@ -171,6 +171,9 @@ void reset_handler(void)
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if( (&_etext_ram-&_text_ram) > 0 )
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{
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src = &_etext_rom-(&_etext_ram-&_text_ram);
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/* Change Shadow memory to ROM (for Debug Purpose in case Boot has not set correctly the M4MEMMAP because of debug) */
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CREG_M4MEMMAP = (unsigned long)src;
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for(dest = &_text_ram; dest < &_etext_ram; )
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{
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*dest++ = *src++;
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Reference in New Issue