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author | Franck JULLIEN <franck.jullien@gmail.com> | 2011-05-02 21:41:52 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-05-04 08:41:02 +0200 |
commit | 3b0bf2964868ac7cb2f0a95e167c78e201182995 (patch) | |
tree | 400296807c148a50eb46847069874712fdebe981 /arch/nios2/lib | |
parent | 1ab3e28f671e98cc5e7ece903ec62cc02521e220 (diff) | |
download | barebox-3b0bf2964868ac7cb2f0a95e167c78e201182995.tar.gz barebox-3b0bf2964868ac7cb2f0a95e167c78e201182995.tar.xz |
Add bootm support
This patch adds the bootm support to the Nios2 arch.
Signed-off-by: Franck JULLIEN <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/nios2/lib')
-rw-r--r-- | arch/nios2/lib/Makefile | 1 | ||||
-rw-r--r-- | arch/nios2/lib/bootm.c | 83 |
2 files changed, 84 insertions, 0 deletions
diff --git a/arch/nios2/lib/Makefile b/arch/nios2/lib/Makefile index 8776c61e5d..fc9d4d7d1c 100644 --- a/arch/nios2/lib/Makefile +++ b/arch/nios2/lib/Makefile @@ -2,5 +2,6 @@ obj-y += board.o obj-y += libgcc.o obj-y += clock.o obj-y += cache.o +obj-y += bootm.o obj-$(CONFIG_EARLY_PRINTF) += early_printf.o diff --git a/arch/nios2/lib/bootm.c b/arch/nios2/lib/bootm.c new file mode 100644 index 0000000000..34e2bd262a --- /dev/null +++ b/arch/nios2/lib/bootm.c @@ -0,0 +1,83 @@ +/* + * barebox - bootm.c + * + * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com> + * + * (C) Copyright 2003, Psyent Corporation <www.psyent.com> + * Scott McNutt <smcnutt@psyent.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <image.h> +#include <environment.h> +#include <init.h> +#include <boot.h> +#include <asm/cache.h> + +#define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */ + +static int do_bootm_linux(struct image_data *idata) +{ + image_header_t *os_header = &idata->os->header; + void (*kernel)(int, int, int, const char *); + const char *commandline = getenv ("bootargs"); + + kernel = (void (*)(int, int, int, const char *))ntohl(os_header->ih_ep); + +#ifdef CONFIG_USE_IRQ + disable_interrupts(); +#endif + + if (relocate_image(idata->os, (void *)ntohl(os_header->ih_load))) + return -1; + + /* kernel parameters passing + * r4 : NIOS magic + * r5 : initrd start + * r6 : initrd end or fdt + * r7 : kernel command line + * fdt is passed to kernel via r6, the same as initrd_end. fdt will be + * verified with fdt magic. when both initrd and fdt are used at the + * same time, fdt must follow immediately after initrd. + */ + + /* flushes data and instruction caches before calling the kernel */ + flush_cache_all(); + + kernel(NIOS_MAGIC, 0, 0, commandline); + /* does not return */ + + return 1; +} + +static struct image_handler handler = { + .bootm = do_bootm_linux, + .image_type = IH_OS_LINUX, +}; + +int nios2_register_image_handler(void) +{ + return register_image_handler(&handler); +} + +late_initcall(nios2_register_image_handler); + |