RTEMS | 6.1 GR740 SMP Driver Manager build fail (#5269)

[Matteo Concas (@matteo.concas)]

Matteo Concas created an issue: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5269



## Summary

Building the GR740 BSP with `RTEMS_SMP` and `RTEMS_DRVMGR_STARTUP` set to True will fail in multiple ways.

The issues appear in `bsps/shared/grlib/btimer/tlib_ckinit.c` .

### First issue

Excerpt from the build log:

```
../../../bsps/shared/grlib/btimer/tlib_ckinit.c: In function 'irqamp_get_timecount':
../../../bsps/shared/grlib/btimer/tlib_ckinit.c:373:28: error: 'irqamp' has no member named 'timestamp'
  373 |   return LEON3_IrqCtrl_Regs->timestamp[0].counter;
      |                            ^~
```

The first issue appears in every instance of `LEON3_IrqCtrl_Regs->timestamp[0]` such as:

```c
irqmp_ts = &LEON3_IrqCtrl_Regs->timestamp[0];
```

This stems from an earlier change where the type of the IRQ(A)MP timestamp register block was changed from `irqmp_timestamp_regs` to `irqamp_timestamp`. These two types represent the same thing but have different names for their members.

##### Possible fix

This can be fixed by using `&LEON3_IrqCtrl_Regs->itstmp[0];` instead.

### Second issue

Excerpt from the build log:

```
/opt/rtems/rtems-7-sparc/bin/../lib/gcc/sparc-rtems7/13.4.0/../../../../sparc-rtems7/bin/ld: ./librtemsbsp.a(tlib_ckinit.c.9.o): in function `tlib_clock_find_timer':
/home/matteo/dev/rtems-gaisler/build/sparc/gr740_smp/../../../bsps/shared/grlib/btimer/tlib_ckinit.c:141:(.text._Clock_Initialize+0x30): undefined reference to `leon3_up_counter_is_available'
collect2: error: ld returned 1 exit status
```

The second issue appears when linking the object files, the `tlib_clock_find_timer()` function calls `leon3_up_counter_is_available()` (declared and defined in `bsps/sparc/leon3/include/bsp/leon3.h`) but this function is only available when the BSP is defined as not having the SPARC ASR22 and ASR23 registers. This is not the case for the GR740 BSP:

```ini
LEON3_HAS_ASR_22_23_UP_COUNTER = True
```

>From the output of `./waf bspdefaults --rtems-bsp=sparc/gr740` .

##### Possible fix

I am not sure why `leon3_up_counter_is_available()` is not always defined like the rest of the up_counter functions in the file. Removing the define guards fixes the issue.

## Steps to reproduce

Create a `gr740.ini` file with the following contents:

```ini
[sparc/gr740_smp]
INHERIT=gr740
RTEMS_SMP=True
RTEMS_DRVMGR_STARTUP=True
```

Run `./waf configure --prefix=$RTEMS_PREFIX --rtems-config=gr740.ini` and then `./waf` .

## Expected behaviour

The build should complete successfully.

/bsp sparc/gr740

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5269
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