Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- arch/powerpc/cpu/mpc85xx/Makefile | 1 + arch/powerpc/cpu/mpc85xx/mpc8544_serdes.c | 95 +++++++++++++++++++++++++++++ 2 files changed, 96 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/cpu/mpc85xx/mpc8544_serdes.c
diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile index 78bc27a..dbb53c8 100644 --- a/arch/powerpc/cpu/mpc85xx/Makefile +++ b/arch/powerpc/cpu/mpc85xx/Makefile @@ -78,6 +78,7 @@ COBJS-$(CONFIG_FSL_CORENET) += fsl_corenet_serdes.o
# SoC specific SERDES support COBJS-$(CONFIG_MPC8536) += mpc8536_serdes.o +COBJS-$(CONFIG_MPC8544) += mpc8544_serdes.o COBJS-$(CONFIG_MPC8548) += mpc8548_serdes.o COBJS-$(CONFIG_MPC8568) += mpc8568_serdes.o COBJS-$(CONFIG_MPC8569) += mpc8569_serdes.o diff --git a/arch/powerpc/cpu/mpc85xx/mpc8544_serdes.c b/arch/powerpc/cpu/mpc85xx/mpc8544_serdes.c new file mode 100644 index 0000000..7c49097 --- /dev/null +++ b/arch/powerpc/cpu/mpc85xx/mpc8544_serdes.c @@ -0,0 +1,95 @@ +/* + * Copyright 2010 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <common.h> +#include <asm/io.h> +#include <asm/immap_85xx.h> +#include <asm/fsl_serdes.h> + +#define SRDS1_MAX_LANES 8 +#define SRDS2_MAX_LANES 4 + +static u32 serdes1_prtcl_map, serdes2_prtcl_map; + +static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { + [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE}, + [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE}, + [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, + [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, + [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, + [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, +}; + +static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { + [0x1] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, + [0x3] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, + [0x5] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, + [0x6] = {PCIE3, NONE, NONE, NONE}, + [0x7] = {PCIE3, NONE, SGMII_TSEC1, SGMII_TSEC3}, +}; + +int is_serdes_configured(enum srds_prtcl device) +{ + int ret = (1 << device) & serdes1_prtcl_map; + + if (ret) + return ret; + + return (1 << device) & serdes2_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; + int lane; + + 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; + } + for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { + enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; + serdes1_prtcl_map |= (1 << lane_prtcl); + } + + if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) { + printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); + return; + } + + for (lane = 0; lane < SRDS2_MAX_LANES; lane++) { + enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane]; + serdes2_prtcl_map |= (1 << lane_prtcl); + } + + if (pordevsr & MPC85xx_PORDEVSR_SGMII1_DIS) + serdes2_prtcl_map &= ~(1 << SGMII_TSEC1); + + if (pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS) + serdes2_prtcl_map &= ~(1 << SGMII_TSEC3); +}