Alright, I think these descriptors were not initialized inside the
functions:
ETH_DMATxDescListInit
ETH_DMARxDescListInit
because they are wrapped in preprocessor guards:
static void ETH_DMATxDescListInit(ETH_HandleTypeDef *heth)
{
#ifndef __rtems__
ETH_DMADescTypeDef *dmatxdesc;
uint32_t i;
/* Fill each DMATxDesc descriptor with the right values */
for(i=0; i < (uint32_t)ETH_TX_DESC_CNT; i++)
{
dmatxdesc = heth->Init.TxDesc + i;
WRITE_REG(dmatxdesc->DESC0, 0x0);
WRITE_REG(dmatxdesc->DESC1, 0x0);
WRITE_REG(dmatxdesc->DESC2, 0x0);
WRITE_REG(dmatxdesc->DESC3, 0x0);
WRITE_REG(heth->TxDescList.TxDesc[i], (uint32_t)dmatxdesc);
}
heth->TxDescList.CurTxDesc = 0;
/* Set Transmit Descriptor Ring Length */
WRITE_REG(heth->Instance->DMACTDRLR, (ETH_TX_DESC_CNT -1));
/* Set Transmit Descriptor List Address */
WRITE_REG(heth->Instance->DMACTDLAR, (uint32_t) heth->Init.TxDesc);
/* Set Transmit Descriptor Tail pointer */
WRITE_REG(heth->Instance->DMACTDTPR, (uint32_t) heth->Init.TxDesc);
#endif /* __rtems__ */
}
Is there a specific reason the function was excluded?
Kind Regards
Robin
On Thu, 28 Jan 2021 at 16:47, Sebastian Huber <
sebastian.hu...@embedded-brains.de> wrote:
> On 28/01/2021 16:45, Robin Müller wrote:
>
> > *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.bsp_nocache*)))
> > .bsp_nocache 0x0000000030000000 0x18c0
> > CMakeFiles/fsfw_example.dir/bsp_stm32_rtems/boardconfig/ethernetif.c.obj
> > 0x0000000030000000 DMARxDscrTab
> > 0x0000000030000060 DMATxDscrTab
> > 0x00000000300000c0 Rx_Buff
> > 0x00000000300018c0 bsp_section_nocache_end = .
> > 0x00000000000018c0 bsp_section_nocache_size =
> > (bsp_section_nocache_end - bsp_section_nocache_begin)
> >
> > But in the debugger, the descriptor entries are still zeroed out
> > unfortunately..
> If you place them in BSP_NOCACHENOLOAD_SECTION or
> BSP_NOCACHENOLOAD_SUBSECTION(), they are not loaded (zero initialized).
>
> --
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