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PR 2015 - LEON3: make SHM driver configurable using weak

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PR 2015/bsps

Since the configuration struct is always present one can let
DATA initialize it to reduce footprint, at the same time it
is made weak to let the user able to configure the SHM driver
without editing the driver code.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
This commit is contained in:
Joel Sherrill
2012-02-17 14:28:19 -06:00
parent 77998753b5
commit 39e8aa9603
2 changed files with 22 additions and 5 deletions
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5
c/src/lib/libbsp/sparc/leon3/ChangeLog
View File

@@ -1,3 +1,8 @@
2012-02-17 Daniel Hellstrom <daniel@gaisler.com>
PR 2015/bsps
* shmsupp/getcfg.c: Make SHM driver configurable using weak symbol.
2011-06-29 Joel Sherrill <joel.sherrill@oarcorp.com>
* smp/getcpuid.c: Fix header from accidental and irrelevant copy and

22
c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c
View File

@@ -76,8 +76,21 @@ extern rtems_mpci_entry Shm_Send_packet(
#define INTERRUPT 0 /* XXX: */
#define POLLING 1 /* XXX: fix me -- is polling ONLY!!! */
shm_config_table BSP_shm_cfgtbl;
/* Let user override this configuration by declaring this a weak variable */
shm_config_table BSP_shm_cfgtbl __attribute__((weak)) =
{
(vol_u32 *)0x40000000, /* USER OVERRIDABLE */
0x00001000, /* USER OVERRIDABLE */
SHM_BIG,
NULL_CONVERT,
INTR_MODE,
Shm_Cause_interrupt,
{
NULL,
1 << LEON3_MP_IRQ, /* USER OVERRIDABLE */
4,
},
};
void Shm_Get_configuration(
uint32_t localnode,
@@ -88,8 +101,6 @@ void Shm_Get_configuration(
int i;
unsigned int tmp;
BSP_shm_cfgtbl.base = 0x40000000;
BSP_shm_cfgtbl.length = 0x00001000;
BSP_shm_cfgtbl.format = SHM_BIG;
/*
@@ -108,7 +119,8 @@ void Shm_Get_configuration(
BSP_shm_cfgtbl.poll_intr = INTR_MODE;
BSP_shm_cfgtbl.Intr.address =
(vol_u32 *) &(LEON3_IrqCtrl_Regs->force[LEON3_Cpu_Index]);
BSP_shm_cfgtbl.Intr.value = 1 << LEON3_MP_IRQ ;
if (BSP_shm_cfgtbl.Intr.value == 0)
BSP_shm_cfgtbl.Intr.value = 1 << LEON3_MP_IRQ; /* Use default MP-IRQ */
BSP_shm_cfgtbl.Intr.length = 4;
if (LEON3_Cpu_Index == 0) {