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/mpc8548_serdes.c | 65 +++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/cpu/mpc85xx/mpc8548_serdes.c
diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile index 9ec19bb..e1320bf 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-$(CONFIG_MPC8548) += mpc8548_serdes.o COBJS-$(CONFIG_MPC8572) += mpc8572_serdes.o COBJS-$(CONFIG_P1013) += p1013_serdes.o COBJS-$(CONFIG_P1022) += p1022_serdes.o diff --git a/arch/powerpc/cpu/mpc85xx/mpc8548_serdes.c b/arch/powerpc/cpu/mpc85xx/mpc8548_serdes.c new file mode 100644 index 0000000..76288cd --- /dev/null +++ b/arch/powerpc/cpu/mpc85xx/mpc8548_serdes.c @@ -0,0 +1,65 @@ +/* + * 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 + +static u32 serdes1_prtcl_map; + +static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { + [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1}, + [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1}, + [0x5] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1}, + [0x6] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1}, + [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1}, +}; + +int is_serdes_configured(enum srds_prtcl prtcl) +{ + return (1 << prtcl) & 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 srds1_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> + MPC85xx_PORDEVSR_IO_SEL_SHIFT; + int lane; + + debug("PORDEVSR[IO_SEL] = %x\n", srds1_cfg); + + if (srds1_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) { + printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds1_cfg); + return ; + } + + for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { + enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds1_cfg][lane]; + serdes1_prtcl_map |= (1 << lane_prtcl); + } +}