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48b545b801
This adds support to the Microwatt platform to use the standard 16550-style UART which available in the standalone Microwatt FPGA. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwXGCTzedpQje7r@thinks.paulus.ozlabs.org
41 lines
879 B
C
41 lines
879 B
C
/*
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* Microwatt FPGA-based SoC platform setup code.
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*
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* Copyright 2020 Paul Mackerras (paulus@ozlabs.org), IBM Corp.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/stddef.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/time.h>
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#include <asm/xics.h>
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#include <asm/udbg.h>
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static void __init microwatt_init_IRQ(void)
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{
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xics_init();
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}
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static int __init microwatt_probe(void)
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{
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return of_machine_is_compatible("microwatt-soc");
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}
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static int __init microwatt_populate(void)
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{
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return of_platform_default_populate(NULL, NULL, NULL);
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}
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machine_arch_initcall(microwatt, microwatt_populate);
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define_machine(microwatt) {
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.name = "microwatt",
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.probe = microwatt_probe,
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.init_IRQ = microwatt_init_IRQ,
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.progress = udbg_progress,
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.calibrate_decr = generic_calibrate_decr,
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};
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