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Add option for different Fomu SPI chips. 

Signed-off-by: Joey Bushagour <jbushagour@google.com>
This commit is contained in:
Joey Bushagour 2021-07-28 10:34:02 -05:00
parent 401568c54e
commit 7b3dce65c1
1 changed files with 13 additions and 3 deletions
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16
litex_boards/targets/kosagi_fomu.py
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@ -69,7 +69,8 @@ class _CRG(Module):
class BaseSoC(SoCCore):
mem_map = {**SoCCore.mem_map, **{"spiflash": 0x80000000}}
def __init__(self, bios_flash_offset, sys_clk_freq=int(12e6), with_led_chaser=True, **kwargs):
def __init__(self, bios_flash_offset, spi_chip='AT25SF161', sys_clk_freq=int(12e6),
with_led_chaser=True, **kwargs):
kwargs["uart_name"] = "usb_acm" # Enforce UART to USB-ACM
platform = fomu_pvt.Platform()
@ -99,9 +100,18 @@ class BaseSoC(SoCCore):
self.bus.add_slave("sram", self.spram.bus, SoCRegion(size=128*kB))
# SPI Flash --------------------------------------------------------------------------------
from litespi.modules import AT25SF161
from litespi.modules import AT25SF161, GD25Q16C, MX25R1635F, W25Q128JV
from litespi.opcodes import SpiNorFlashOpCodes as Codes
self.add_spi_flash(mode="4x", module=AT25SF161(Codes.READ_1_1_4), with_master=False)
# lambdas for lazy module instantiation.
spi_provider = {
'AT25SF161': lambda: AT25SF161(Codes.READ_1_1_4),
'GD25Q16C': lambda: GD25Q16C(Codes.READ_1_1_1),
'MX25R1635F': lambda: MX25R1635F(Codes.READ_1_1_4),
'W25Q128JV': lambda: W25Q128JV(Codes.READ_1_1_4),
}
self.add_spi_flash(mode="4x", module=spi_provider[spi_chip](), with_master=False)
#self.add_spi_flash(mode="1x", dummy_cycles=8) # LiteX SPI Flash Core.
# Add ROM linker region --------------------------------------------------------------------