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https://github.com/licsber/micropython.git
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7e62c9707a
Adds support for SDRAM via `SEMC` peripheral. SDRAM support can be enabled in the mpconfigboard.mk file by setting `MICROPY_HW_SDRAM_AVAIL` to `1` and poviding the size of the RAM via `MICROPY_HW_FLASH_SIZE`. When SDRAM support is enabled the whole SDRAM is currently used used for MicroPython heap. Signed-off-by: Philipp Ebensberger
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
/* Memory configuration */
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#if defined MICROPY_HW_FLASH_RESERVED
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reserved_size = MICROPY_HW_FLASH_RESERVED;
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#endif
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#if MICROPY_HW_FLASH_TYPE == qspi_nor
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flash_start = 0x60000000;
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#else
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#error Unknown MICROPY_HW_FLASH_TYPE
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#endif
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flash_size = MICROPY_HW_FLASH_SIZE;
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flash_end = DEFINED(reserved_size) ? ((flash_start) + (flash_size - reserved_size)) : ((flash_start) + (flash_size));
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flash_config_start = flash_start;
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flash_config_size = 0x00001000;
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ivt_start = flash_start + 0x00001000;
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ivt_size = 0x00001000;
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interrupts_start = flash_start + 0x00002000;
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interrupts_size = 0x00000400;
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text_start = flash_start + 0x00002400;
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vfs_start = flash_start + 0x00100000;
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text_size = ((vfs_start) - (text_start));
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vfs_size = ((flash_end) - (vfs_start));
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itcm_start = 0x00000000;
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itcm_size = 0x00008000;
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dtcm_start = 0x20000000;
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dtcm_size = 0x00018000;
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ocrm_start = 0x20200000;
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ocrm_size = 0x00020000;
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#ifdef MICROPY_HW_SDRAM_AVAIL
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sdram_start = 0x80000000;
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sdram_size = MICROPY_HW_SDRAM_SIZE;
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#endif
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/* 24kiB stack. */
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__stack_size__ = 0x6000;
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_estack = __StackTop;
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_sstack = __StackLimit;
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#ifdef MICROPY_HW_SDRAM_AVAIL
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_gc_heap_start = ORIGIN(m_sdram);
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_gc_heap_end = ORIGIN(m_sdram) + LENGTH(m_sdram);
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#else
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/* Use second OCRAM bank for GC heap. */
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_gc_heap_start = ORIGIN(m_ocrm);
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_gc_heap_end = ORIGIN(m_ocrm) + LENGTH(m_ocrm);
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#endif
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