[U-Boot] [PATCH 09/11] Support passing a Marvell-specific ATAG
rogan at dawes.za.net
rogan at dawes.za.net
Fri Mar 18 09:04:58 CET 2011
From: Rogan Dawes <rogan at dawes.za.net>
---
arch/arm/include/asm/setup.h | 18 ++++++++++++++++++
arch/arm/lib/bootm.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 89df4dc..bd6229a 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -198,6 +198,19 @@ struct tag_acorn {
u8 adfsdrives;
};
+/* Marvell specific information
+ * requred for compatability with vendor kernels
+ */
+#define ATAG_MV_UBOOT 0x41000403
+
+struct tag_mv_uboot {
+ u32 uboot_version;
+ u32 tclk;
+ u32 sysclk;
+ u32 isUsbHost;
+ u32 overEthAddr;
+};
+
/* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
#define ATAG_MEMCLK 0x41000402
@@ -227,6 +240,11 @@ struct tag {
* DC21285 specific
*/
struct tag_memclk memclk;
+
+ /*
+ * Marvell specific
+ */
+ struct tag_mv_uboot mv_uboot;
} u;
};
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 3101321..f3acd6c 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -45,6 +45,11 @@ static void setup_commandline_tag (bd_t *bd, char *commandline);
static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
ulong initrd_end);
# endif
+
+#ifdef CONFIG_MARVELL_TAG
+static void setup_marvell_tag(void);
+#endif
+
static void setup_end_tag (bd_t *bd);
static struct tag *params;
@@ -80,6 +85,7 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
defined (CONFIG_CMDLINE_TAG) || \
defined (CONFIG_INITRD_TAG) || \
+ defined (CONFIG_MARVELL_TAG) || \
defined (CONFIG_SERIAL_TAG) || \
defined (CONFIG_REVISION_TAG)
setup_start_tag (bd);
@@ -99,6 +105,9 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
if (images->rd_start && images->rd_end)
setup_initrd_tag (bd, images->rd_start, images->rd_end);
#endif
+#ifdef CONFIG_MARVELL_TAG
+ setup_marvell_tag();
+#endif
setup_end_tag (bd);
#endif
@@ -232,6 +241,27 @@ void setup_revision_tag(struct tag **in_params)
}
#endif /* CONFIG_REVISION_TAG */
+#ifdef CONFIG_MARVELL_TAG
+#define ATAG_MARVELL 0x41000403
+#define VER_NUM 0x01070300
+
+void setup_marvell_tag(void) {
+ debug("Setting up Marvell tag\n");
+ params->hdr.tag = ATAG_MARVELL;
+ params->hdr.size = tag_size (tag_mv_uboot);
+
+ params->u.mv_uboot.uboot_version = VER_NUM;
+ params->u.mv_uboot.uboot_version |= 0xB; // RD_88F5182_2XSATA
+ params->u.mv_uboot.tclk = 166000000;
+ params->u.mv_uboot.sysclk = 166000000;
+ params->u.mv_uboot.isUsbHost = 1;
+ params->u.mv_uboot.isUsbHost |= 2;
+
+ params->u.mv_uboot.overEthAddr = 0;
+
+ params = tag_next (params);
+}
+#endif
static void setup_end_tag (bd_t *bd)
{
--
1.7.1
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