7b6bb66f02
At present the GEM support in sifive_u machine is seriously broken. The GEM block register base was set to a weird number (0x100900FC), which for no way could work with the cadence_gem model in QEMU. Not like other GEM variants, the FU540-specific GEM has a management block to control 10/100/1000Mbps link speed changes, that is mapped to 0x100a0000. We can simply map it into MMIO space without special handling using create_unimplemented_device(). Update the GEM node compatible string to use the official name used by the upstream Linux kernel, and add the management block reg base & size to the <reg> property encoding. Tested with upstream U-Boot and Linux kernel MACB drivers. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
40 lines
539 B
Plaintext
40 lines
539 B
Plaintext
config HTIF
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bool
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config HART
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bool
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config SIFIVE
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bool
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select MSI_NONBROKEN
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config SIFIVE_E
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bool
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select HART
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select SIFIVE
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select UNIMP
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config SIFIVE_U
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bool
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select CADENCE
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select HART
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select SIFIVE
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select UNIMP
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config SPIKE
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bool
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select HART
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select HTIF
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select SIFIVE
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config RISCV_VIRT
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bool
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imply PCI_DEVICES
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imply TEST_DEVICES
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select PCI
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select HART
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select SERIAL
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select VIRTIO_MMIO
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select PCI_EXPRESS_GENERIC_BRIDGE
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select SIFIVE
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