circuitpython/ports/stm32/boards/stm32f427xi.ld
Lorenzo Cappelletti 8f0e304e65 stm32/boards: Add new board MikroElektronika Quail, and F427 support.
Quail (https://www.mikroe.com/quail, PID: MIKROE-1793) is based on an
STM32F427VI CPU, featuring 2048 kB of Flash memory and 192 kB of RAM.  An
on-board Cypress S25FL164K adds 8 MB of SPI Flash.

Quail has 4 mikroBUS(TM) sockets for Mikroe click(TM) board connectivity,
along with 24 screw terminals for connecting additional electronics and two
USB ports (one for programming, the other for external mass storage).

4 UARTs, 2 SPIs and 1 I2C bus are available for communication.

Signed-off-by: Lorenzo Cappelletti <lorenzo.cappelletti@gmail.com>
2021-11-19 16:33:13 +11:00

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/*
GNU linker script for STM32F427xI
*/
/* Specify the memory areas */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K /* entire flash */
FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0, 16 KiB */
FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 112K /* sectors 1-4: 3*16K+64K */
FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 896K /* sectors 5-11 are 128K */
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K
}
/* produce a link error if there is not this amount of RAM for these sections */
_minimum_stack_size = 2K;
_minimum_heap_size = 16K;
/* Define the stack. The stack is full descending so begins just above last byte
of RAM. Note that EABI requires the stack to be 8-byte aligned for a call. */
_estack = ORIGIN(RAM) + LENGTH(RAM) - _estack_reserve;
_sstack = _estack - 16K; /* tunable */
/* RAM extents for the garbage collector */
_ram_start = ORIGIN(RAM);
_ram_end = ORIGIN(RAM) + LENGTH(RAM);
_heap_start = _ebss; /* heap starts just after statically allocated memory */
_heap_end = _sstack;