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.
Updated MPC85xx_PORDEVSR_IO_SEL & MPC85xx_PORDEVSR_IO_SEL_SHIFT
Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com --- Changes for v1: Incorporated Wolfgang Denk's comment -- removed volatile
Based git://git.denx.de/u-boot-mpc85xx.git (branch master)
arch/powerpc/cpu/mpc85xx/Makefile | 2 + arch/powerpc/cpu/mpc85xx/p1010_serdes.c | 75 +++++++++++++++++++++++++++++++ arch/powerpc/include/asm/immap_85xx.h | 5 ++ 3 files changed, 82 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/cpu/mpc85xx/p1010_serdes.c
diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile index b7f51e7..69c43b3 100644 --- a/arch/powerpc/cpu/mpc85xx/Makefile +++ b/arch/powerpc/cpu/mpc85xx/Makefile @@ -87,9 +87,11 @@ COBJS-$(CONFIG_MPC8548) += mpc8548_serdes.o COBJS-$(CONFIG_MPC8568) += mpc8568_serdes.o COBJS-$(CONFIG_MPC8569) += mpc8569_serdes.o COBJS-$(CONFIG_MPC8572) += mpc8572_serdes.o +COBJS-$(CONFIG_P1010) += p1010_serdes.o COBJS-$(CONFIG_P1011) += p1021_serdes.o COBJS-$(CONFIG_P1012) += p1021_serdes.o COBJS-$(CONFIG_P1013) += p1013_serdes.o +COBJS-$(CONFIG_P1014) += p1010_serdes.o COBJS-$(CONFIG_P1020) += p1021_serdes.o COBJS-$(CONFIG_P1021) += p1021_serdes.o COBJS-$(CONFIG_P1022) += p1022_serdes.o diff --git a/arch/powerpc/cpu/mpc85xx/p1010_serdes.c b/arch/powerpc/cpu/mpc85xx/p1010_serdes.c new file mode 100644 index 0000000..4524d29 --- /dev/null +++ b/arch/powerpc/cpu/mpc85xx/p1010_serdes.c @@ -0,0 +1,75 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * Author: Prabhakar Kushwaha prabhakar@freescale.com + * + * 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. + */ + +#include <config.h> +#include <common.h> +#include <asm/io.h> +#include <asm/immap_85xx.h> +#include <asm/fsl_serdes.h> + +#define SRDS1_MAX_LANES 4 +#define SRDS2_MAX_LANES 2 + +static u32 serdes1_prtcl_map, serdes2_prtcl_map; + +static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { + [0x00] = {NONE, NONE, NONE, NONE}, + [0x01] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3}, + [0x02] = {PCIE1, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3}, + [0x03] = {NONE, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3}, +}; + +static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { + [0x00] = {NONE, NONE}, + [0x01] = {SATA1, SATA2}, + [0x02] = {SATA1, SATA2}, + [0x03] = {PCIE1, PCIE2}, +}; + + +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); + } +} diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h index 93a9e6c..7531fdc 100644 --- a/arch/powerpc/include/asm/immap_85xx.h +++ b/arch/powerpc/include/asm/immap_85xx.h @@ -1891,8 +1891,13 @@ typedef struct ccsr_gur { #define MPC85xx_PORDEVSR_IO_SEL 0x007c0000 #define MPC85xx_PORDEVSR_IO_SEL_SHIFT 18 #else +#if defined(CONFIG_P1010) +#define MPC85xx_PORDEVSR_IO_SEL 0x00600000 +#define MPC85xx_PORDEVSR_IO_SEL_SHIFT 21 +#else #define MPC85xx_PORDEVSR_IO_SEL 0x00780000 #define MPC85xx_PORDEVSR_IO_SEL_SHIFT 19 +#endif /* if defined(CONFIG_P1010) */ #endif #define MPC85xx_PORDEVSR_PCI2_ARB 0x00040000 #define MPC85xx_PORDEVSR_PCI1_ARB 0x00020000