[U-Boot] [PATCH 2/3] mx53loco: Allow to print CPU information at a later stage

Fabio Estevam
2012-04-30T18:12:03Z

Print CPU information within board_late_init().

This is in preparation for adding 1GHz support, which requires programming a PMIC
via I2C. As I2C is only available after relocation, print the CPU information
later at board_late_init(), so that the CPU frequency can be printed correctly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v2:
- Rebased against Stefano's u-boot-imx plus the v2 version of
http://marc.info/?l=u-boot&m=133572323109396&w=2

arch/arm/cpu/armv7/imx-common/cpu.c | 2 +-
arch/arm/include/asm/arch-mx5/sys_proto.h | 1 +
board/freescale/mx53loco/mx53loco.c | 22 ++++++++++++++++++++++
include/configs/mx53loco.h | 1 -
4 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c
index b96fa5b..b3195dd 100644
--- a/arch/arm/cpu/armv7/imx-common/cpu.c
+++ b/arch/arm/cpu/armv7/imx-common/cpu.c
@@ -35,7 +35,7 @@
#include <fsl_esdhc.h>
#endif

-static char *get_reset_cause(void)
+char *get_reset_cause(void)
{
u32 cause;
struct src *src_regs = (struct src *)SRC_BASE_ADDR;
diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index 3f10d29..7b5246e 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -37,5 +37,6 @@ void set_chipselect_size(int const);
int fecmxc_initialize(bd_t *bis);
u32 get_ahb_clk(void);
u32 get_periph_clk(void);
+char *get_reset_cause(void);

#endif
diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index 7ea9f6e..46aaeb2 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -299,6 +299,28 @@ int board_early_init_f(void)
return 0;
}

+int print_cpuinfo(void)
+{
+ u32 cpurev;
+
+ cpurev = get_cpu_rev();
+ printf("CPU: Freescale i.MX%x family rev%d.%d at %d MHz\n",
+ (cpurev & 0xFF000) >> 12,
+ (cpurev & 0x000F0) >> 4,
+ (cpurev & 0x0000F) >> 0,
+ mxc_get_clock(MXC_ARM_CLK) / 1000000);
+ printf("Reset cause: %s\n", get_reset_cause());
+ return 0;
+}
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+ print_cpuinfo();
+ return 0;
+}
+#endif
+
int board_init(void)
{
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index af59307..0778bde 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -27,7 +27,6 @@

#define CONFIG_SYS_MX5_HCLK 24000000
#define CONFIG_SYS_MX5_CLK32 32768
-#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO

#define CONFIG_MACH_TYPE MACH_TYPE_MX53_LOCO
--
1.7.1