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[src/trunk]: src/sys/stand/efiboot/bootarm Add efiboot support for 32-bit ARM...
details: https://anonhg.NetBSD.org/src/rev/a767eac5d943
branches: trunk
changeset: 449953:a767eac5d943
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sat Mar 30 12:48:50 2019 +0000
description:
Add efiboot support for 32-bit ARM targets.
diffstat:
sys/stand/efiboot/bootarm/Makefile | 20 +++++
sys/stand/efiboot/bootarm/cache.S | 118 +++++++++++++++++++++++++++++++++
sys/stand/efiboot/bootarm/efibootarm.c | 62 +++++++++++++++++
3 files changed, 200 insertions(+), 0 deletions(-)
diffs (212 lines):
diff -r fe639fcb798c -r a767eac5d943 sys/stand/efiboot/bootarm/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/stand/efiboot/bootarm/Makefile Sat Mar 30 12:48:50 2019 +0000
@@ -0,0 +1,20 @@
+# $NetBSD: Makefile,v 1.1 2019/03/30 12:48:50 jmcneill Exp $
+
+PROG= bootarm.efi
+OBJFMT= binary
+NEWVERSWHAT= "EFI Boot (arm)"
+GNUEFIARCH= arm
+LIBGNUEFI_ARCH= arm
+
+EXTRA_SOURCES= efibootarm.c
+EXTRA_SOURCES+= cache.S
+
+COPTS+= -mno-unaligned-access -ffreestanding -fno-unwind-tables
+CFLAGS+= -DEFIBOOT_ALIGN=0x1000000
+LDFLAGS+= -N
+
+.include "${.CURDIR}/../Makefile.efiboot"
+
+release: check_RELEASEDIR
+ ${HOST_INSTALL_FILE} -m ${BINMODE} ${PROG} \
+ ${RELEASEDIR}/${MACHINE}/installation/misc
diff -r fe639fcb798c -r a767eac5d943 sys/stand/efiboot/bootarm/cache.S
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/stand/efiboot/bootarm/cache.S Sat Mar 30 12:48:50 2019 +0000
@@ -0,0 +1,118 @@
+/*-
+ * Copyright (c) 2010 Per Odlund <per.odlund%armagedon.se@localhost>
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ARMv7 assembly functions for manipulating caches and other core functions.
+ * Based on cpufuncs for v6 and xscale.
+ */
+
+#include <machine/asm.h>
+
+ .arch armv7a
+
+/* LINTSTUB: void armv7_dcache_wbinv_range(vaddr_t, vsize_t); */
+ENTRY(armv7_dcache_wbinv_range)
+ mov ip, #0
+ mcr p15, 2, ip, c0, c0, 0 @ set cache level to L1
+ mrc p15, 1, r2, c0, c0, 0 @ read CCSIDR
+ and r2, r2, #7 @ get line size (log2(size)-4, 0=16)
+ mov ip, #16 @ make a bit mask
+ lsl r2, ip, r2 @ and shift into position
+ sub ip, r2, #1 @ make into a mask
+ and r3, r0, ip @ get offset into cache line
+ add r1, r1, r3 @ add to length
+ bic r0, r0, ip @ clear offset from start.
+ dsb
+1:
+ mcr p15, 0, r0, c7, c14, 1 @ wb and inv the D-Cache line to PoC
+ add r0, r0, r2
+ subs r1, r1, r2
+ bhi 1b
+ dsb @ data synchronization barrier
+ bx lr
+END(armv7_dcache_wbinv_range)
+
+/* * LINTSTUB: void armv7_icache_inv_all(void); */
+ENTRY_NP(armv7_icache_inv_all)
+ mov r0, #0
+ mcr p15, 2, r0, c0, c0, 0 @ set cache level to L1
+ mrc p15, 1, r0, c0, c0, 0 @ read CCSIDR
+
+ ubfx r2, r0, #13, #15 @ get num sets - 1 from CCSIDR
+ ubfx r3, r0, #3, #10 @ get numways - 1 from CCSIDR
+ clz r1, r3 @ number of bits to MSB of way
+ lsl r3, r3, r1 @ shift into position
+ mov ip, #1 @
+ lsl ip, ip, r1 @ ip now contains the way decr
+
+ ubfx r0, r0, #0, #3 @ get linesize from CCSIDR
+ add r0, r0, #4 @ apply bias
+ lsl r2, r2, r0 @ shift sets by log2(linesize)
+ add r3, r3, r2 @ merge numsets - 1 with numways - 1
+ sub ip, ip, r2 @ subtract numsets - 1 from way decr
+ mov r1, #1
+ lsl r1, r1, r0 @ r1 now contains the set decr
+ mov r2, ip @ r2 now contains set way decr
+
+ /* r3 = ways/sets, r2 = way decr, r1 = set decr, r0 and ip are free */
+1: mcr p15, 0, r3, c7, c6, 2 @ DCISW (data cache invalidate by set/way)
+ movs r0, r3 @ get current way/set
+ beq 2f @ at 0 means we are done.
+ lsls r0, r0, #10 @ clear way bits leaving only set bits
+ subne r3, r3, r1 @ non-zero?, decrement set #
+ subeq r3, r3, r2 @ zero?, decrement way # and restore set count
+ b 1b
+
+2: dsb @ wait for stores to finish
+ mov r0, #0 @ and ...
+ mcr p15, 0, r0, c7, c5, 0 @ invalidate L1 cache
+ isb @ instruction sync barrier
+ bx lr @ return
+END(armv7_icache_inv_all)
+
+ENTRY_NP(armv7_exec_kernel)
+ mov r4, r0 @ kernel entry
+ mov r5, r1 @ fdt address
+
+ /* Disable MMU and cache */
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR read
+ bic r0, r0, #5 @ disable dcache and MMU
+ mcr p15, 0, r0, c1, c0, 0 @ SCTLR write
+
+ /* Invalidate TLB */
+ dsb
+ mov r0, #0
+ mcr p15, 0, r0, c8, c7, 0 @ flush I+D TLB
+ dsb
+ isb
+
+ /* Setup kernel args */
+ mov r0, #0
+ mov r1, #0
+ mov r2, r5
+ mov r3, #0
+
+ /* Jump to kernel */
+ bx r4
+END(armv7_exec_kernel)
diff -r fe639fcb798c -r a767eac5d943 sys/stand/efiboot/bootarm/efibootarm.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/stand/efiboot/bootarm/efibootarm.c Sat Mar 30 12:48:50 2019 +0000
@@ -0,0 +1,62 @@
+/* $NetBSD: efibootarm.c,v 1.1 2019/03/30 12:48:50 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2019 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "../efiboot.h"
+#include "../efifdt.h"
+
+#include <sys/bootblock.h>
+
+#include <loadfile.h>
+
+/* cache.S */
+void armv7_dcache_wbinv_range(vaddr_t, vsize_t);
+void armv7_icache_inv_all(void);
+void armv7_exec_kernel(register_t, register_t);
+
+void
+efi_dcache_flush(u_long start, u_long size)
+{
+ armv7_dcache_wbinv_range(start, size);
+}
+
+void
+efi_boot_kernel(u_long marks[MARK_MAX])
+{
+ void (*kernel_entry)(register_t, register_t, register_t, register_t);
+ u_long kernel_size;
+
+ kernel_entry = (void *)marks[MARK_START];
+ kernel_size = marks[MARK_END] - marks[MARK_START];
+
+ armv7_dcache_wbinv_range((u_long)kernel_entry, kernel_size);
+ if (efi_fdt_size() > 0)
+ armv7_dcache_wbinv_range((u_long)efi_fdt_data(), efi_fdt_size());
+ armv7_icache_inv_all();
+
+ armv7_exec_kernel((register_t)marks[MARK_START], (register_t)efi_fdt_data());
+}
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