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https://github.com/AsahiLinux/u-boot
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71fe22256c
Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* Copyright 2013 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <asm/io.h>
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#include <asm/immap_85xx.h>
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#include <asm/fsl_serdes.h>
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#define SRDS1_MAX_LANES 4
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static u32 serdes1_prtcl_map;
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struct serdes_config {
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u32 protocol;
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u8 lanes[SRDS1_MAX_LANES];
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};
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static const struct serdes_config serdes1_cfg_tbl[] = {
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/* SerDes 1 */
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{1, {PCIE1, PCIE1, PCIE1, PCIE1} },
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{2, {PCIE1, PCIE1, PCIE1, PCIE1} },
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{3, {PCIE1, PCIE1, NONE, NONE} },
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{4, {PCIE1, PCIE1, NONE, NONE} },
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{5, {PCIE1, NONE, NONE, NONE} },
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{6, {PCIE1, NONE, NONE, NONE} },
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{}
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};
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int is_serdes_configured(enum srds_prtcl device)
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{
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if (!(serdes1_prtcl_map & (1 << NONE)))
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fsl_serdes_init();
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return (1 << device) & serdes1_prtcl_map;
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}
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void fsl_serdes_init(void)
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{
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ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
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u32 pordevsr = in_be32(&gur->pordevsr);
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u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
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MPC85xx_PORDEVSR_IO_SEL_SHIFT;
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const struct serdes_config *ptr;
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int lane;
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if (serdes1_prtcl_map & (1 << NONE))
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return;
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debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
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if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
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printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
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return;
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}
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ptr = &serdes1_cfg_tbl[srds_cfg];
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if (!ptr->protocol)
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return;
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for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
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enum srds_prtcl lane_prtcl = ptr->lanes[lane];
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serdes1_prtcl_map |= (1 << lane_prtcl);
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}
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/* Set the first bit to indicate serdes has been initialized */
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serdes1_prtcl_map |= (1 << NONE);
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}
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