857e33e27f
Not all SBI calls are implemented, but it's enough to see a couple dozen lines of Linux boot output. It should also be noted that the SBI is still in flux: https://groups.google.com/a/groups.riscv.org/forum/#!topic/sw-dev/6oNhlW0OFKM Change-Id: I80e4fe508336d6428ca7136bc388fbc3cda4f1e4 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/16119 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
119 lines
3.4 KiB
C
119 lines
3.4 KiB
C
/*
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* Copyright (c) 2013, The Regents of the University of California (Regents).
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* All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Regents nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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* SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
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* OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
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* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
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* HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
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* MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#include <arch/barrier.h>
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#include <arch/errno.h>
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#include <atomic.h>
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#include <console/console.h>
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#include <spike_util.h>
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#include <string.h>
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#include <vm.h>
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uintptr_t translate_address(uintptr_t vAddr) {
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// TODO: implement the page table translation algorithm
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//uintptr_t pageTableRoot = read_csr(sptbr);
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uintptr_t physAddrMask = 0xfffffff;
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uintptr_t translationResult = vAddr & physAddrMask;
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printk(BIOS_DEBUG, "Translated virtual address 0x%llx to physical address 0x%llx\n", vAddr, translationResult);
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return translationResult;
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}
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uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info)
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{
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if (id == 0) {
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mprv_write_ulong(&info->base, 2U*GiB);
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/* TODO: Return the correct value */
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mprv_write_ulong(&info->size, 1*GiB);
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return 0;
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}
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return -1;
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}
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uintptr_t mcall_send_ipi(uintptr_t recipient)
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{
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die("mcall_send_ipi is currently not implemented");
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return 0;
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}
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uintptr_t mcall_clear_ipi(void)
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{
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// only clear SSIP if no other events are pending
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if (HLS()->device_response_queue_head == NULL) {
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clear_csr(mip, MIP_SSIP);
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mb();
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}
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return atomic_swap(&HLS()->ipi_pending, 0);
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}
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uintptr_t mcall_shutdown(void)
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{
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die("mcall_shutdown is currently not implemented");
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return 0;
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}
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uintptr_t mcall_set_timer(unsigned long long when)
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{
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printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n");
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return 0;
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}
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uintptr_t mcall_dev_req(sbi_device_message *m)
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{
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die("mcall_dev_req is currently not implemented");
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return 0;
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}
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uintptr_t mcall_dev_resp(void)
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{
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die("mcall_dev_resp is currently not implemented");
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return 0;
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}
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void hls_init(uint32_t hart_id)
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{
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memset(HLS(), 0, sizeof(*HLS()));
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HLS()->hart_id = hart_id;
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}
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uintptr_t mcall_console_putchar(uint8_t ch)
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{
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do_putchar(ch);
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return 0;
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}
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void testPrint(void) {
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/* Print a test command to check Spike console output */
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mcall_console_putchar('h');
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mcall_console_putchar('e');
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mcall_console_putchar('l');
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mcall_console_putchar('l');
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mcall_console_putchar('o');
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mcall_console_putchar('\n');
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}
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