[PATCH 10/12] arm: omap: store boot source info from ROM loader
Teresa Gámez
t.gamez at phytec.de
Mon Jul 8 09:17:08 EDT 2013
The ROM loader passes the address of a buffer to the MLO in
register 0. Store this data so we can find the boot source later.
On the same way the bootinformation are passed to the barebox,
then. It has to be enshured that r0 contains always the
buffer or the boot source detection will not work.
Applied this on all OMAPs. This patch is based on work of
Jan Luebbe <jlu at pengutronix.de>.
Compile tested on all OMAP boards.
Tested on pcm049, phyCARD-A-L1 and pcm051.
Signed-off-by: Teresa Gámez <t.gamez at phytec.de>
Tested-by: Christoph Fritz <chf.fritz at googlemail.com>
---
arch/arm/boards/archosg9/lowlevel.c | 5 ++++-
arch/arm/boards/beagle/lowlevel.c | 6 +++++-
arch/arm/boards/beaglebone/lowlevel.c | 5 ++++-
arch/arm/boards/omap343xdsp/lowlevel.c | 6 +++++-
arch/arm/boards/omap3evm/lowlevel.c | 5 ++++-
arch/arm/boards/panda/lowlevel.c | 6 +++++-
arch/arm/boards/pcm049/lowlevel.c | 6 +++++-
arch/arm/boards/pcm051/lowlevel.c | 5 ++++-
arch/arm/boards/phycard-a-l1/lowlevel.c | 5 ++++-
arch/arm/boards/phycard-a-xl2/lowlevel.c | 6 +++++-
arch/arm/mach-omap/Makefile | 4 ++--
arch/arm/mach-omap/am33xx_generic.c | 18 +++++++++++++++++-
arch/arm/mach-omap/include/mach/generic.h | 3 +++
arch/arm/mach-omap/omap3_generic.c | 16 +++++++++++++---
arch/arm/mach-omap/omap4_generic.c | 18 +++++++++++++-----
arch/arm/mach-omap/omap_bootinfo.S | 25 +++++++++++++++++++++++++
arch/arm/mach-omap/xload.c | 8 ++++++--
17 files changed, 124 insertions(+), 23 deletions(-)
create mode 100644 arch/arm/mach-omap/omap_bootinfo.S
diff --git a/arch/arm/boards/archosg9/lowlevel.c b/arch/arm/boards/archosg9/lowlevel.c
index 49c1541..8be345b 100644
--- a/arch/arm/boards/archosg9/lowlevel.c
+++ b/arch/arm/boards/archosg9/lowlevel.c
@@ -14,6 +14,7 @@
#include <io.h>
#include <init.h>
#include <sizes.h>
+#include <mach/generic.h>
#include <mach/omap4-mux.h>
#include <mach/omap4-silicon.h>
#include <mach/omap4-clock.h>
@@ -64,8 +65,10 @@ static noinline void archosg9_init_lowlevel(void)
omap4_ddr_init(&ddr_regs_400_mhz_2cs, &core);
}
-void __naked __bare_init barebox_arm_reset_vector(void)
+void __naked __bare_init barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
if (get_pc() > 0x80000000)
diff --git a/arch/arm/boards/beagle/lowlevel.c b/arch/arm/boards/beagle/lowlevel.c
index d0fd066..ef7e3c0 100644
--- a/arch/arm/boards/beagle/lowlevel.c
+++ b/arch/arm/boards/beagle/lowlevel.c
@@ -1,8 +1,10 @@
+#include <init.h>
#include <io.h>
#include <sizes.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
#include <mach/control.h>
+#include <mach/generic.h>
#include <mach/omap3-silicon.h>
#include <mach/omap3-mux.h>
#include <mach/sdrc.h>
@@ -178,8 +180,10 @@ static int beagle_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __naked __bare_init barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
beagle_board_init();
diff --git a/arch/arm/boards/beaglebone/lowlevel.c b/arch/arm/boards/beaglebone/lowlevel.c
index 65d0887..d871ca1 100644
--- a/arch/arm/boards/beaglebone/lowlevel.c
+++ b/arch/arm/boards/beaglebone/lowlevel.c
@@ -5,6 +5,7 @@
#include <asm/barebox-arm.h>
#include <mach/am33xx-silicon.h>
#include <mach/am33xx-clock.h>
+#include <mach/generic.h>
#include <mach/sdrc.h>
#include <mach/sys_info.h>
#include <mach/syslib.h>
@@ -248,8 +249,10 @@ static int beaglebone_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __bare_init __naked barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
beaglebone_board_init();
diff --git a/arch/arm/boards/omap343xdsp/lowlevel.c b/arch/arm/boards/omap343xdsp/lowlevel.c
index ed675ad..61b7f99 100644
--- a/arch/arm/boards/omap343xdsp/lowlevel.c
+++ b/arch/arm/boards/omap343xdsp/lowlevel.c
@@ -1,8 +1,10 @@
#include <common.h>
+#include <init.h>
#include <io.h>
#include <sizes.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
+#include <mach/generic.h>
#include <mach/omap3-mux.h>
#include <mach/sdrc.h>
#include <mach/control.h>
@@ -545,8 +547,10 @@ static int sdp343x_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __naked __bare_init barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
sdp343x_board_init();
diff --git a/arch/arm/boards/omap3evm/lowlevel.c b/arch/arm/boards/omap3evm/lowlevel.c
index 2d9e130..ea92835 100644
--- a/arch/arm/boards/omap3evm/lowlevel.c
+++ b/arch/arm/boards/omap3evm/lowlevel.c
@@ -3,6 +3,7 @@
#include <sizes.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
+#include <mach/generic.h>
#include <mach/omap3-mux.h>
#include <mach/sdrc.h>
#include <mach/control.h>
@@ -159,8 +160,10 @@ static int omap3_evm_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __naked __bare_init barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
omap3_evm_board_init();
diff --git a/arch/arm/boards/panda/lowlevel.c b/arch/arm/boards/panda/lowlevel.c
index 5d3490f..a21d559 100644
--- a/arch/arm/boards/panda/lowlevel.c
+++ b/arch/arm/boards/panda/lowlevel.c
@@ -17,8 +17,10 @@
*
*/
#include <common.h>
+#include <init.h>
#include <io.h>
#include <sizes.h>
+#include <mach/generic.h>
#include <mach/omap4-mux.h>
#include <mach/omap4-silicon.h>
#include <mach/omap4-clock.h>
@@ -76,8 +78,10 @@ static void noinline panda_init_lowlevel(void)
omap4460_scale_vcores(TPS62361_VSEL0_GPIO, 1210);
}
-void barebox_arm_reset_vector(void)
+void __bare_init __naked barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
if (get_pc() > 0x80000000)
diff --git a/arch/arm/boards/pcm049/lowlevel.c b/arch/arm/boards/pcm049/lowlevel.c
index 6b12fa4..07cc1d7 100644
--- a/arch/arm/boards/pcm049/lowlevel.c
+++ b/arch/arm/boards/pcm049/lowlevel.c
@@ -17,8 +17,10 @@
*
*/
#include <common.h>
+#include <init.h>
#include <io.h>
#include <sizes.h>
+#include <mach/generic.h>
#include <mach/omap4-mux.h>
#include <mach/omap4-silicon.h>
#include <mach/omap4-clock.h>
@@ -106,8 +108,10 @@ static void noinline pcm049_init_lowlevel(void)
sr32(OMAP44XX_SCRM_ALTCLKSRC, 2, 2, 0x3); /* enable clocks */
}
-void barebox_arm_reset_vector(void)
+void __bare_init __naked barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
if (get_pc() > 0x80000000)
diff --git a/arch/arm/boards/pcm051/lowlevel.c b/arch/arm/boards/pcm051/lowlevel.c
index 7e7633c..f4a1742 100644
--- a/arch/arm/boards/pcm051/lowlevel.c
+++ b/arch/arm/boards/pcm051/lowlevel.c
@@ -6,6 +6,7 @@
#include <asm/barebox-arm.h>
#include <mach/am33xx-silicon.h>
#include <mach/am33xx-clock.h>
+#include <mach/generic.h>
#include <mach/sdrc.h>
#include <mach/sys_info.h>
#include <mach/syslib.h>
@@ -207,8 +208,10 @@ static int pcm051_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __naked __bare_init barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
pcm051_board_init();
diff --git a/arch/arm/boards/phycard-a-l1/lowlevel.c b/arch/arm/boards/phycard-a-l1/lowlevel.c
index 30379d8..7855040 100644
--- a/arch/arm/boards/phycard-a-l1/lowlevel.c
+++ b/arch/arm/boards/phycard-a-l1/lowlevel.c
@@ -5,6 +5,7 @@
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
#include <mach/omap3-mux.h>
+#include <mach/generic.h>
#include <mach/sdrc.h>
#include <mach/control.h>
#include <mach/syslib.h>
@@ -250,8 +251,10 @@ static int pcaal1_board_init(void)
return 0;
}
-void __naked barebox_arm_reset_vector(void)
+void __bare_init __naked barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
pcaal1_board_init();
diff --git a/arch/arm/boards/phycard-a-xl2/lowlevel.c b/arch/arm/boards/phycard-a-xl2/lowlevel.c
index 010171a..9a794b7 100644
--- a/arch/arm/boards/phycard-a-xl2/lowlevel.c
+++ b/arch/arm/boards/phycard-a-xl2/lowlevel.c
@@ -17,8 +17,10 @@
*
*/
#include <common.h>
+#include <init.h>
#include <io.h>
#include <sizes.h>
+#include <mach/generic.h>
#include <mach/omap4-mux.h>
#include <mach/omap4-silicon.h>
#include <mach/omap4-clock.h>
@@ -86,8 +88,10 @@ static noinline void pcaaxl2_init_lowlevel(void)
sr32(0x4A30a110, 2, 2, 0x3); /* enable clocks */
}
-void barebox_arm_reset_vector(void)
+void __bare_init __naked barebox_arm_reset_vector(uint32_t *data)
{
+ omap_save_bootinfo();
+
arm_cpu_lowlevel_init();
if (get_pc() > 0x80000000)
diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile
index e5759f5..2163c3f 100644
--- a/arch/arm/mach-omap/Makefile
+++ b/arch/arm/mach-omap/Makefile
@@ -15,8 +15,8 @@
# GNU General Public License for more details.
#
#
-obj-$(CONFIG_ARCH_OMAP) += syslib.o omap_devices.o omap_generic.o omap_fb.o
-pbl-$(CONFIG_ARCH_OMAP) += syslib.o
+obj-$(CONFIG_ARCH_OMAP) += syslib.o omap_devices.o omap_generic.o omap_fb.o omap_bootinfo.o
+pbl-$(CONFIG_ARCH_OMAP) += syslib.o omap_bootinfo.o
obj-$(CONFIG_OMAP_CLOCK_SOURCE_S32K) += s32k_clksource.o
obj-$(CONFIG_OMAP_CLOCK_SOURCE_DMTIMER0) += dmtimer0.o
obj-$(CONFIG_ARCH_OMAP3) += omap3_generic.o auxcr.o
diff --git a/arch/arm/mach-omap/am33xx_generic.c b/arch/arm/mach-omap/am33xx_generic.c
index ac99035..a653ef7 100644
--- a/arch/arm/mach-omap/am33xx_generic.c
+++ b/arch/arm/mach-omap/am33xx_generic.c
@@ -25,6 +25,7 @@
#include <net.h>
#include <mach/am33xx-silicon.h>
#include <mach/am33xx-clock.h>
+#include <mach/generic.h>
#include <mach/sys_info.h>
#include <mach/am33xx-generic.h>
#include <mach/gpmc.h>
@@ -98,7 +99,22 @@ u32 running_in_sdram(void)
static int am33xx_bootsource(void)
{
- bootsource_set(BOOTSOURCE_MMC); /* only MMC for now */
+ enum bootsource src;
+
+ switch (omap_bootinfo[2] & 0xFF) {
+ case 0x05:
+ src = BOOTSOURCE_NAND;
+ break;
+ case 0x08:
+ src = BOOTSOURCE_MMC;
+ break;
+ case 0x0b:
+ src = BOOTSOURCE_SPI;
+ break;
+ default:
+ src = BOOTSOURCE_UNKNOWN;
+ }
+ bootsource_set(src);
bootsource_set_instance(0);
return 0;
}
diff --git a/arch/arm/mach-omap/include/mach/generic.h b/arch/arm/mach-omap/include/mach/generic.h
index 178c21f..9c474e2 100644
--- a/arch/arm/mach-omap/include/mach/generic.h
+++ b/arch/arm/mach-omap/include/mach/generic.h
@@ -33,4 +33,7 @@
#define cpu_is_am33xx() (0)
#endif
+extern uint32_t omap_bootinfo[3];
+void omap_save_bootinfo(void);
+
#endif
diff --git a/arch/arm/mach-omap/omap3_generic.c b/arch/arm/mach-omap/omap3_generic.c
index f144813..8b661ff 100644
--- a/arch/arm/mach-omap/omap3_generic.c
+++ b/arch/arm/mach-omap/omap3_generic.c
@@ -33,6 +33,7 @@
#include <io.h>
#include <mach/omap3-silicon.h>
#include <mach/gpmc.h>
+#include <mach/generic.h>
#include <mach/sdrc.h>
#include <mach/control.h>
#include <mach/omap3-smx.h>
@@ -468,12 +469,21 @@ void omap3_core_init(void)
static int omap3_bootsource(void)
{
enum bootsource src = BOOTSOURCE_UNKNOWN;
- u32 bootsrc = readl(OMAP3_TRACING_VECTOR1);
- if (bootsrc & (1 << 2))
+ switch (omap_bootinfo[1] & 0xFF) {
+ case 0x02:
src = BOOTSOURCE_NAND;
- if (bootsrc & (1 << 6))
+ break;
+ case 0x06:
src = BOOTSOURCE_MMC;
+ break;
+ case 0x11:
+ src = BOOTSOURCE_USB;
+ break;
+ default:
+ src = BOOTSOURCE_UNKNOWN;
+ }
+
bootsource_set(src);
bootsource_set_instance(0);
diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c
index a082b71..54cefa2 100644
--- a/arch/arm/mach-omap/omap4_generic.c
+++ b/arch/arm/mach-omap/omap4_generic.c
@@ -6,6 +6,7 @@
#include <mach/omap4-silicon.h>
#include <mach/omap4-mux.h>
#include <mach/syslib.h>
+#include <mach/generic.h>
#include <mach/gpmc.h>
#include <mach/gpio.h>
#include <mach/omap4_rom_usb.h>
@@ -504,14 +505,21 @@ static int omap_vector_init(void)
static int omap4_bootsource(void)
{
enum bootsource src = BOOTSOURCE_UNKNOWN;
- u32 bootsrc = readl(OMAP4_TRACING_VECTOR3);
- if (bootsrc & (1 << 5))
- src = BOOTSOURCE_MMC;
- else if (bootsrc & (1 << 3))
+ switch (omap_bootinfo[2] & 0xFF) {
+ case 0x03:
src = BOOTSOURCE_NAND;
- else if (bootsrc & (1<<20))
+ break;
+ case 0x05:
+ src = BOOTSOURCE_MMC;
+ break;
+ case 0x20:
src = BOOTSOURCE_USB;
+ break;
+ default:
+ src = BOOTSOURCE_UNKNOWN;
+ }
+
bootsource_set(src);
bootsource_set_instance(0);
diff --git a/arch/arm/mach-omap/omap_bootinfo.S b/arch/arm/mach-omap/omap_bootinfo.S
new file mode 100644
index 0000000..ffd0a3d
--- /dev/null
+++ b/arch/arm/mach-omap/omap_bootinfo.S
@@ -0,0 +1,25 @@
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+.section ".text_bare_init","ax"
+.globl omap_bootinfo
+omap_bootinfo:
+ .word 0x0
+ .word 0x0
+ .word 0x0
+
+.section ".text_bare_init","ax"
+ENTRY(omap_save_bootinfo)
+ /*
+ * save data from rom boot loader
+ */
+ adr r2, omap_bootinfo
+ ldr r1, [r0, #0x00]
+ str r1, [r2, #0x00]
+ ldr r1, [r0, #0x04]
+ str r1, [r2, #0x04]
+ ldr r1, [r0, #0x08]
+ str r1, [r2, #0x08]
+ mov pc, lr
+ENDPROC(omap_save_bootinfo)
diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c
index 3cce3f2..3dbdef5 100644
--- a/arch/arm/mach-omap/xload.c
+++ b/arch/arm/mach-omap/xload.c
@@ -9,6 +9,7 @@
#include <fcntl.h>
#include <sizes.h>
#include <filetype.h>
+#include <mach/generic.h>
static void *read_image_head(const char *name)
{
@@ -163,7 +164,8 @@ static void *omap4_xload_boot_usb(void){
*/
static __noreturn int omap_xload(void)
{
- int (*func)(void) = NULL;
+ int (*func)(void *) = NULL;
+ uint32_t *arg;
switch (bootsource_get())
{
@@ -198,8 +200,10 @@ static __noreturn int omap_xload(void)
while (1);
}
+ arg = (uint32_t *)&omap_bootinfo;
+
shutdown_barebox();
- func();
+ func(arg);
while (1);
}
--
1.7.0.4
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