mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2013 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <common.h>
|
|
#include <log.h>
|
|
#include <asm/io.h>
|
|
#include <asm/immap_85xx.h>
|
|
#include <asm/fsl_serdes.h>
|
|
|
|
#define SRDS1_MAX_LANES 4
|
|
|
|
static u32 serdes1_prtcl_map;
|
|
|
|
struct serdes_config {
|
|
u32 protocol;
|
|
u8 lanes[SRDS1_MAX_LANES];
|
|
};
|
|
|
|
static const struct serdes_config serdes1_cfg_tbl[] = {
|
|
/* SerDes 1 */
|
|
{1, {PCIE1, PCIE1, PCIE1, PCIE1} },
|
|
{2, {PCIE1, PCIE1, PCIE1, PCIE1} },
|
|
{3, {PCIE1, PCIE1, NONE, NONE} },
|
|
{4, {PCIE1, PCIE1, NONE, NONE} },
|
|
{5, {PCIE1, NONE, NONE, NONE} },
|
|
{6, {PCIE1, NONE, NONE, NONE} },
|
|
{}
|
|
};
|
|
|
|
int is_serdes_configured(enum srds_prtcl device)
|
|
{
|
|
if (!(serdes1_prtcl_map & (1 << NONE)))
|
|
fsl_serdes_init();
|
|
|
|
return (1 << device) & serdes1_prtcl_map;
|
|
}
|
|
|
|
void fsl_serdes_init(void)
|
|
{
|
|
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
|
|
u32 pordevsr = in_be32(&gur->pordevsr);
|
|
u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
|
|
MPC85xx_PORDEVSR_IO_SEL_SHIFT;
|
|
const struct serdes_config *ptr;
|
|
int lane;
|
|
|
|
if (serdes1_prtcl_map & (1 << NONE))
|
|
return;
|
|
|
|
debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
|
|
|
|
if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
|
|
printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
|
|
return;
|
|
}
|
|
|
|
ptr = &serdes1_cfg_tbl[srds_cfg];
|
|
if (!ptr->protocol)
|
|
return;
|
|
|
|
for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
|
|
enum srds_prtcl lane_prtcl = ptr->lanes[lane];
|
|
serdes1_prtcl_map |= (1 << lane_prtcl);
|
|
}
|
|
|
|
/* Set the first bit to indicate serdes has been initialized */
|
|
serdes1_prtcl_map |= (1 << NONE);
|
|
}
|