Imx515 uboot changed the Console

 

CPU model: mx515

CPU core: arm cortexa8

 

MX51 uboot changed the Console

Freescale uboot_imx uses uart1 as the console by default. Our project uart2 communicates with the microcontroller.

To facilitate debugging and test uart2, I use uart2 as the console to exclude uart2 code settings.

The method is as follows:

 

1. Set uart2 in the configuration file

Feilong @ feilong-desktop :~ /Uboot-IMX $ SVN diff include/configs/mx51_vdphone.h

Index: Include/configs/mx51_vdphone.h

========================================================== ======================================

--- Include/configs/mx51_vdphone.h
(Revision 184)

++ Include/configs/mx51_vdphone.h
(Working copy)

-68,7 + 68,8 @@

* Hardware drivers

*/

# Define config_mx51_uart
1

-# Define config_mx51_uart1
1

+ // # Define config_mx51_uart1
1

+ # Define config_mx51_uart2
1

 

@-118, 7 + 119,7 @@

 

/* Allow to overwrite serial and ethaddr */

# Define config_env_overwrite

-# Define config_cons_index
1

+ # Define config_cons_index
2

# Define config_baudrate
115200

# Define config_sys_baudrate_table
{9600,192 00, 38400,576 00, 115200}

 

2. Configure the uart2 pin in uart2 mode in the Board initialization file.

Feilong @ feilong-desktop :~ /Uboot-IMX $ SVN diff board/Freescale/mx51_bbg/mx51_bbg.c

Index: Board/Freescale/mx51_bbg/mx51_bbg.c

 

========================================================== ======================================

--- Board/Freescale/mx51_bbg/mx51_bbg.c
(Revision 136)

++ Board/Freescale/mx51_bbg/mx51_bbg.c
(Working copy)

@-238,6 + 238,20 @@

Writel (0x00000004, 0x73fa83ec );

}

 

+ Static void setup_uart2 (void)

+ {

+
Unsigned int pad = pad_ctl_hys_enable | pad_ctl_pke_enable |

+
Pad_ctl_pue_pull | pad_ctl_drv_high;

 

+
Mxc_request_iomux (mx51_pin_uart2_rxd, iomux_config_alt0 );

+
Mxc_iomux_set_pad (mx51_pin_uart2_rxd, pad | pad_ctl_sre_fast );

+
Mxc_request_iomux (mx51_pin_uart2_txd, iomux_config_alt0 );

+
Mxc_iomux_set_pad (mx51_pin_uart2_txd, pad | pad_ctl_sre_fast );

+
/* Enable gpio00009 for clk0 and gpio00008 for clk02 */

+
Writel (0x00000004, 0x73fa83e8 );

+
Writel (0x00000004, 0x73fa83ec );

 

+}

+

+

Void setup_nfc (void)

{

/* Enable NFC iomux */

@-, 6 + @@

GD-> BD-> bi_boot_params = phys_sdram_1 + 0x100;

 

Setup_uart ();

+
Setup_uart2 ();

Setup_nfc ();

Setup_expio ();

Setup_fec ();

Feilong @ feilong-desktop :~ /Uboot-IMX $