e0e784a456
Works in the RISCV version of QEMU. Note that the lzmadecode is so unclean that it needs a lot of work. A cleanup is in progress. We decided in Prague to do this as one thing, because it forms a nice case study of the bare minimum you need to add to get a new architecture going in qemu. Change-Id: If5af15c3a70733d219973e0d032746f8ab027e4d Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/7584 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins)
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <bootblock_common.h>
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#include <arch/cache.h>
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#include <arch/hlt.h>
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#include <arch/stages.h>
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#include <arch/exception.h>
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#include <cbfs.h>
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#include <console/console.h>
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static int boot_cpu(void)
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{
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/*
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* FIXME: This is a stub for now. All non-boot CPUs should be
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* waiting for an interrupt. We could move the chunk of assembly
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* which puts them to sleep in here...
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*/
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return 1;
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}
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void main(void)
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{
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const char *stage_name = CONFIG_CBFS_PREFIX"/romstage";
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void *entry = NULL;
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/* Globally disable MMU, caches, and branch prediction (these should
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* be disabled by default on reset) */
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dcache_mmu_disable();
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/*
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* Re-enable icache and branch prediction. MMU and dcache will be
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* set up later.
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*
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* Note: If booting from USB, we need to disable branch prediction
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* before copying from USB into RAM (FIXME: why?)
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*/
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if (boot_cpu()) {
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//bootblock_cpu_init();
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//bootblock_mainboard_init();
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}
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#ifdef CONFIG_BOOTBLOCK_CONSOLE
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console_init();
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exception_init();
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#endif
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entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, stage_name);
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printk(BIOS_SPEW, "stage_name %s, entry %p\n", stage_name, entry);
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if (entry) stage_exit(entry);
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hlt();
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}
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