[PATCH] TMS570: Add board reset code to bsp_reset

[Gedare Bloom]

On Thu, Mar 26, 2015 at 5:07 PM, Daniel Gutson
<daniel.gutson at tallertechnologies.com> wrote:
> On Thu, Mar 26, 2015 at 5:16 PM, Martin Galvan
> <martin.galvan at tallertechnologies.com> wrote:
>> ---
>>  c/src/lib/libbsp/arm/tms570/include/tms570.h   | 19 +++++++------
>>  c/src/lib/libbsp/arm/tms570/startup/bspreset.c | 37 ++++++++++++++++----------
>>  2 files changed, 34 insertions(+), 22 deletions(-)
>>
>> diff --git a/c/src/lib/libbsp/arm/tms570/include/tms570.h b/c/src/lib/libbsp/arm/tms570/include/tms570.h
>> index 2023a29..50f1315 100644
>> --- a/c/src/lib/libbsp/arm/tms570/include/tms570.h
>> +++ b/c/src/lib/libbsp/arm/tms570/include/tms570.h
>> @@ -7,15 +7,9 @@
>>   */
>>
>>  /*
>> - * Copyright (c) 2014 Premysl Houdek <kom541000 at gmail.com>
>> + * Copyright (c) 2015 Taller Technologies.
>
> Is this correct, or should we both be listed here? Be careful here.
>
Thanks, I think this is fine here since it was just some stub code
that probably isn't copyrightable, but..IANAL.

>>   *
>> - * Google Summer of Code 2014 at
>> - * Czech Technical University in Prague
>> - * Zikova 1903/4
>> - * 166 36 Praha 6
>> - * Czech Republic
>> - *
>> - * Based on LPC24xx and LPC1768 BSP
>> + * @author Martin Galvan <martin.galvan at tallertechnologies.com>
>>   *
>>   * The license and distribution terms for this file may be
>>   * found in the file LICENSE in this distribution or at
>> @@ -25,4 +19,13 @@
>>  #ifndef LIBBSP_ARM_TMS570_H
>>  #define LIBBSP_ARM_TMS570_H
>>
>> +#define SYSECR (*(uint32_t *)0xFFFFFFE0u) /* System Exception Control Register */
>> +#define ESMIOFFHR (*(uint32_t *)0xFFFFF528) /* ESM Interrupt Offset High Register */
>> +#define ESMSR1 (*(uint32_t *)0xFFFFF518u) /* ESM Status Register 1 */
>> +#define ESMSR2 (*(uint32_t *)0xFFFFF51Cu) /* ESM Status Register 2 */
>> +#define ESMSR3 (*(uint32_t *)0xFFFFF520u) /* ESM Status Register 3 */
>> +#define ESMSR4 (*(uint32_t *)0xFFFFF558u) /* ESM Status Register 4 */
>> +
>> +#define SYSECR_RESET 0x80000u
>> +
>>  #endif /* LIBBSP_ARM_TMS570_H */
>> diff --git a/c/src/lib/libbsp/arm/tms570/startup/bspreset.c b/c/src/lib/libbsp/arm/tms570/startup/bspreset.c
>> index d47920c..a4b6647 100644
>> --- a/c/src/lib/libbsp/arm/tms570/startup/bspreset.c
>> +++ b/c/src/lib/libbsp/arm/tms570/startup/bspreset.c
>> @@ -7,30 +7,39 @@
>>   */
>>
>>  /*
>> - * Copyright (c) 2014 Premysl Houdek <kom541000 at gmail.com>
>> + * Copyright (c) 2015 Taller Technologies.
>>   *
>> - * Google Summer of Code 2014 at
>> - * Czech Technical University in Prague
>> - * Zikova 1903/4
>> - * 166 36 Praha 6
>> - * Czech Republic
>> - *
>> - * Based on LPC24xx and LPC1768 BSP
>> + * @author Martin Galvan <martin.galvan at tallertechnologies.com>
>>   *
>>   * The license and distribution terms for this file may be
>>   * found in the file LICENSE in this distribution or at
>>   * http://www.rtems.org/license/LICENSE.
>>   */
>>
>> -#include <rtems.h>
>> -
>> -#include <bsp/bootcard.h>
>> +#include <bsp.h>
>>  #include <bsp/tms570.h>
>>  #include <bsp/start.h>
>>
>> -BSP_START_TEXT_SECTION __attribute__( ( flatten ) ) void bsp_reset( void )
>> +static void handle_esm_errors(uint32_t esm_irq_channel)
>> +{
>> +  /* ESMR3 errors don't generate interrupts. */
>> +  if (esm_irq_channel < 0x20u) {
>> +    ESMSR1 = 1 << esm_irq_channel;
>> +  } else if (esm_irq_channel < 0x40u) {
>> +    ESMSR2 = 1 << (esm_irq_channel - 32u);
>> +  } else if (esm_irq_channel < 0x60u) {
>> +    ESMSR4 = 1 << (esm_irq_channel - 64u);
>> +  }
>> +}
>> +
>> +void bsp_reset(void)
>>  {
>> -  while ( true ) {
>> -    /* Do nothing */
>> +  uint32_t esm_irq_channel = ESMIOFFHR - 1;
>> +
>> +  if (esm_irq_channel) {
>> +    handle_esm_errors(esm_irq_channel);
>>    }
>> +
>> +  /* Reset the board */
>> +  SYSECR = SYSECR_RESET;
>>  }
>> --
>> 2.3.4
>>
>> _______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
>
>
> --
>
> Daniel F. Gutson
> Chief Engineering Officer, SPD
>
> San Lorenzo 47, 3rd Floor, Office 5
> Córdoba, Argentina
>
> Phone:   +54 351 4217888 / +54 351 4218211
> Skype:    dgutson
> LinkedIn: http://ar.linkedin.com/in/danielgutson
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