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b1d3e91e9a
It can be useful to make SBI v0.2 or newer ecalls from this payload for testing purposes. To support this, convert the macros to use the extension/function parameter convention. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Atish Patra <atish.patra@wdc.com>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi/sbi_ecall_interface.h>
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#define SBI_ECALL(__eid, __fid, __a0, __a1, __a2) \
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({ \
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register unsigned long a0 asm("a0") = (unsigned long)(__a0); \
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register unsigned long a1 asm("a1") = (unsigned long)(__a1); \
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register unsigned long a2 asm("a2") = (unsigned long)(__a2); \
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register unsigned long a6 asm("a6") = (unsigned long)(__fid); \
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register unsigned long a7 asm("a7") = (unsigned long)(__eid); \
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asm volatile("ecall" \
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: "+r"(a0) \
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: "r"(a1), "r"(a2), "r"(a6), "r"(a7) \
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: "memory"); \
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a0; \
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})
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#define SBI_ECALL_0(__eid, __fid) SBI_ECALL(__eid, __fid, 0, 0, 0)
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#define SBI_ECALL_1(__eid, __fid, __a0) SBI_ECALL(__eid, __fid, __a0, 0, 0)
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#define SBI_ECALL_2(__eid, __fid, __a0, __a1) SBI_ECALL(__eid, __fid, __a0, __a1, 0)
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#define sbi_ecall_console_putc(c) SBI_ECALL_1(SBI_EXT_0_1_CONSOLE_PUTCHAR, 0, (c))
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static inline void sbi_ecall_console_puts(const char *str)
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{
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while (str && *str)
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sbi_ecall_console_putc(*str++);
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}
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#define wfi() \
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do { \
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__asm__ __volatile__("wfi" ::: "memory"); \
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} while (0)
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void test_main(unsigned long a0, unsigned long a1)
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{
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sbi_ecall_console_puts("\nTest payload running\n");
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while (1)
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wfi();
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}
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