riscv: Unify SBI call implementations under arch/riscv/

Note that currently, traps are only handled by the trap handler
installed in the bootblock. The romstage and ramstage don't override it.

TEST=Booted emulation/spike-qemu and lowrisc/nexys4ddr with a linux
     payload. It worked as much as before (Linux didn't boot, but it
     made some successful SBI calls)

Change-Id: Icce96ab3f41ae0f34bd86e30f9ff17c30317854e
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/17057
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

3 files changed, 0 insertions, 107 deletions

diff --git a/src/mainboard/lowrisc/nexys4ddr/Makefile.inc b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc
index 69519b189e..abd341c5d7 100644
--- a/src/mainboard/lowrisc/nexys4ddr/Makefile.inc
+++ b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc
@@ -13,14 +13,11 @@
 ## GNU General Public License for more details.
 
 bootblock-y += uart.c
-bootblock-y += util.c
 bootblock-y += rom_media.c
 romstage-y += romstage.c
 romstage-y += uart.c
-romstage-y += util.c
 romstage-y += rom_media.c
 ramstage-y += uart.c
-ramstage-y += util.c
 ramstage-y += rom_media.c
 
 bootblock-y += memlayout.ld
diff --git a/src/mainboard/lowrisc/nexys4ddr/uart.c b/src/mainboard/lowrisc/nexys4ddr/uart.c
index d19ce520d8..7758db355a 100644
--- a/src/mainboard/lowrisc/nexys4ddr/uart.c
+++ b/src/mainboard/lowrisc/nexys4ddr/uart.c
@@ -17,7 +17,6 @@
 #include <console/uart.h>
 #include <arch/io.h>
 #include <boot/coreboot_tables.h>
-#include <spike_util.h>
 
 uintptr_t uart_platform_base(int idx)
 {
diff --git a/src/mainboard/lowrisc/nexys4ddr/util.c b/src/mainboard/lowrisc/nexys4ddr/util.c
deleted file mode 100644
index 32cdb6d573..0000000000
--- a/src/mainboard/lowrisc/nexys4ddr/util.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (c) 2013, The Regents of the University of California (Regents).
- * All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Regents nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT,
- * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
- * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
- * DOCUMENTATION, EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING
- * DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS
- * IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
- * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- */
-
-#include <arch/barrier.h>
-#include <arch/errno.h>
-#include <atomic.h>
-#include <console/console.h>
-#include <spike_util.h>
-#include <string.h>
-#include <vm.h>
-
-uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info)
-{
-	if (id == 0) {
-		mprv_write_ulong(&info->base, 2U*GiB);
-
-		/* TODO: Return the correct value */
-		mprv_write_ulong(&info->size, 1*GiB);
-		return 0;
-	}
-
-	return -1;
-}
-
-uintptr_t mcall_send_ipi(uintptr_t recipient)
-{
-	die("mcall_send_ipi is currently not implemented");
-	return 0;
-}
-
-uintptr_t mcall_clear_ipi(void)
-{
-	// only clear SSIP if no other events are pending
-	if (HLS()->device_response_queue_head == NULL) {
-		clear_csr(mip, MIP_SSIP);
-		/* Ensure the other hart sees it. */
-		mb();
-	}
-
-	return atomic_swap(&HLS()->ipi_pending, 0);
-}
-
-uintptr_t mcall_shutdown(void)
-{
-	die("mcall_shutdown is currently not implemented");
-	return 0;
-}
-
-uintptr_t mcall_set_timer(unsigned long long when)
-{
-	printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n");
-	return 0;
-}
-
-uintptr_t mcall_dev_req(sbi_device_message *m)
-{
-	die("mcall_dev_req is currently not implemented");
-	return 0;
-}
-
-uintptr_t mcall_dev_resp(void)
-{
-	die("mcall_dev_resp is currently not implemented");
-	return 0;
-}
-
-void hls_init(uint32_t hart_id)
-{
-	memset(HLS(), 0, sizeof(*HLS()));
-	HLS()->hart_id = hart_id;
-}
-
-uintptr_t mcall_console_putchar(uint8_t ch)
-{
-	do_putchar(ch);
-	return 0;
-}