Module Name: src
Committed By: jmcneill
Date: Tue May 12 10:37:20 UTC 2015
Modified Files:
src/sys/arch/evbarm/tegra: tegra_machdep.c tegra_start.S
Log Message:
copy bootargs from uboot before we turn on the MMU, for the benefit of kernels
without __HAVE_MM_MD_DIRECT_MAPPED_PHYS
To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/evbarm/tegra/tegra_machdep.c
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/evbarm/tegra/tegra_start.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/evbarm/tegra/tegra_machdep.c
diff -u src/sys/arch/evbarm/tegra/tegra_machdep.c:1.12 src/sys/arch/evbarm/tegra/tegra_machdep.c:1.13
--- src/sys/arch/evbarm/tegra/tegra_machdep.c:1.12 Sat May 9 18:57:30 2015
+++ src/sys/arch/evbarm/tegra/tegra_machdep.c Tue May 12 10:37:20 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_machdep.c,v 1.12 2015/05/09 18:57:30 jmcneill Exp $ */
+/* $NetBSD: tegra_machdep.c,v 1.13 2015/05/12 10:37:20 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcne...@invisible.ca>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_machdep.c,v 1.12 2015/05/09 18:57:30 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_machdep.c,v 1.13 2015/05/12 10:37:20 jmcneill Exp $");
#include "opt_tegra.h"
#include "opt_machdep.h"
@@ -93,7 +93,7 @@ __KERNEL_RCSID(0, "$NetBSD: tegra_machde
#endif
BootConfig bootconfig;
-static char bootargs[TEGRA_MAX_BOOT_STRING];
+char bootargs[TEGRA_MAX_BOOT_STRING] = "";
char *boot_args = NULL;
u_int uboot_args[4] = { 0 }; /* filled in by tegra_start.S (not in bss) */
@@ -303,14 +303,6 @@ initarm(void *arg)
arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_HIGH, 0, devmap,
mapallmem_p);
- if (mapallmem_p) {
- if (uboot_args[3] < ram_size) {
- const char * const args = (const char *)
- (uboot_args[3] + KERNEL_BASE_VOFFSET);
- strlcpy(bootargs, args, sizeof(bootargs));
- }
- }
-
DPRINTF("bootargs: %s\n", bootargs);
boot_args = bootargs;
Index: src/sys/arch/evbarm/tegra/tegra_start.S
diff -u src/sys/arch/evbarm/tegra/tegra_start.S:1.3 src/sys/arch/evbarm/tegra/tegra_start.S:1.4
--- src/sys/arch/evbarm/tegra/tegra_start.S:1.3 Sun Apr 26 22:04:28 2015
+++ src/sys/arch/evbarm/tegra/tegra_start.S Tue May 12 10:37:20 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_start.S,v 1.3 2015/04/26 22:04:28 jmcneill Exp $ */
+/* $NetBSD: tegra_start.S,v 1.4 2015/05/12 10:37:20 jmcneill Exp $ */
/*-
* Copyright (c) 2014, 2015 The NetBSD Foundation, Inc.
@@ -43,7 +43,7 @@
#include <arm/nvidia/tegra_reg.h>
#include <evbarm/tegra/platform.h>
-RCSID("$NetBSD: tegra_start.S,v 1.3 2015/04/26 22:04:28 jmcneill Exp $")
+RCSID("$NetBSD: tegra_start.S,v 1.4 2015/05/12 10:37:20 jmcneill Exp $")
#if defined(VERBOSE_INIT_ARM)
#define XPUTC(n) mov r0, n; bl xputc
@@ -102,6 +102,26 @@ _C_LABEL(tegra_start):
stmia r4, {r0-r3} // Save the arguments
/*
+ * Copy the value of the "bootargs" environment variable from r3.
+ */
+ movw r4, #:lower16:bootargs
+ movt r4, #:upper16:bootargs
+ sub r4, r4, #KERNEL_BASE_VOFFSET
+
+ cmp r3, #0
+ beq 1f
+2:
+ ldrb r0, [r3], #1
+ strb r0, [r4], #1
+ teq r0, #0
+ bne 2b
+1:
+
+ /*
+ * Turn on the SMP bit
+ */
+
+ /*
* Turn on the SMP bit
*/
bl cortex_init
