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soc/add_spi_flash: Generate useful software constants from SPIFlash module.

This commit is contained in:
Florent Kermarrec 2021-07-29 19:24:10 +02:00
parent f0a258e0a7
commit ab48461d6a
1 changed files with 11 additions and 1 deletions
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12
litex/soc/integration/soc.py
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@ -1487,6 +1487,7 @@ class LiteXSoC(SoC):
# Imports.
from litespi.phy.generic import LiteSPIPHY
from litespi import LiteSPI
from litespi.opcodes import SpiNorFlashOpCodes
# Checks/Parameters.
assert mode in ["1x", "4x"]
@ -1499,10 +1500,19 @@ class LiteXSoC(SoC):
spiflash_phy = LiteSPIPHY(spiflash_pads, module, default_divisor=max(int(self.sys_clk_freq/clk_freq), 2))
spiflash_core = LiteSPI(spiflash_phy, clk_freq=clk_freq, mmap_endianness=self.cpu.endianness, **kwargs)
setattr(self.submodules, name + "_phy", spiflash_phy)
setattr(self.submodules, name + "_mmap", spiflash_core)
setattr(self.submodules, name + "_core", spiflash_core)
spiflash_region = SoCRegion(origin=self.mem_map.get(name, None), size=module.total_size)
self.bus.add_slave(name=name, slave=spiflash_core.bus, region=spiflash_region)
# Constants.
self.add_constant("SPIFLASH_MODULE_NAME", module.name.upper())
self.add_constant("SPIFLASH_MODULE_TOTAL_SIZE", module.total_size)
self.add_constant("SPIFLASH_MODULE_PAGE_SIZE", module.page_size)
if SpiNorFlashOpCodes.READ_1_1_4 in module.supported_opcodes:
self.add_constant("SPIFLASH_MODULE_QUAD_CAPABLE")
if SpiNorFlashOpCodes.READ_4_4_4 in module.supported_opcodes:
self.add_constant("SPIFLASH_MODULE_QPI_CAPABLE")
# Add SPI SDCard -------------------------------------------------------------------------------
def add_spi_sdcard(self, name="spisdcard", spi_clk_freq=400e3, software_debug=False):
# Imports.