mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 07:57:21 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
475 lines
11 KiB
C
475 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2014-2015 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <linux/errno.h>
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#include <asm/arch/fsl_serdes.h>
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#include <asm/arch/soc.h>
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#include <fsl-mc/ldpaa_wriop.h>
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#ifdef CONFIG_SYS_FSL_SRDS_1
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static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
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#endif
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#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
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int xfi_dpmac[XFI8 + 1];
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int sgmii_dpmac[SGMII16 + 1];
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#endif
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__weak void wriop_init_dpmac_qsgmii(int sd, int lane_prtcl)
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{
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return;
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}
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/*
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*The return value of this func is the serdes protocol used.
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*Typically this function is called number of times depending
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*upon the number of serdes blocks in the Silicon.
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*Zero is used to denote that no serdes was enabled,
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*this is the case when golden RCW was used where DPAA2 bring was
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*intentionally removed to achieve boot to prompt
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*/
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__weak int serdes_get_number(int serdes, int cfg)
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{
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return cfg;
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}
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int is_serdes_configured(enum srds_prtcl device)
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{
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int ret = 0;
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!serdes1_prtcl_map[NONE])
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fsl_serdes_init();
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ret |= serdes1_prtcl_map[device];
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!serdes2_prtcl_map[NONE])
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fsl_serdes_init();
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ret |= serdes2_prtcl_map[device];
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#endif
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return !!ret;
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}
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int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 cfg = 0;
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int i;
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switch (sd) {
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#ifdef CONFIG_SYS_FSL_SRDS_1
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case FSL_SRDS_1:
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cfg = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS1_REGSR - 1]);
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cfg &= FSL_CHASSIS3_SRDS1_PRTCL_MASK;
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cfg >>= FSL_CHASSIS3_SRDS1_PRTCL_SHIFT;
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break;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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case FSL_SRDS_2:
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cfg = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS2_REGSR - 1]);
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cfg &= FSL_CHASSIS3_SRDS2_PRTCL_MASK;
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cfg >>= FSL_CHASSIS3_SRDS2_PRTCL_SHIFT;
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break;
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#endif
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default:
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printf("invalid SerDes%d\n", sd);
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break;
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}
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cfg = serdes_get_number(sd, cfg);
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/* Is serdes enabled at all? */
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if (cfg == 0)
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return -ENODEV;
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for (i = 0; i < SRDS_MAX_LANES; i++) {
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if (serdes_get_prtcl(sd, cfg, i) == device)
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return i;
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}
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return -ENODEV;
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}
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void serdes_init(u32 sd, u32 sd_addr, u32 rcwsr, u32 sd_prctl_mask,
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u32 sd_prctl_shift, u8 serdes_prtcl_map[SERDES_PRCTL_COUNT])
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 cfg;
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int lane;
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if (serdes_prtcl_map[NONE])
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return;
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memset(serdes_prtcl_map, 0, sizeof(u8) * SERDES_PRCTL_COUNT);
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cfg = gur_in32(&gur->rcwsr[rcwsr - 1]) & sd_prctl_mask;
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cfg >>= sd_prctl_shift;
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cfg = serdes_get_number(sd, cfg);
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printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
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if (!is_serdes_prtcl_valid(sd, cfg))
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printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
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for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
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enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
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if (unlikely(lane_prtcl >= SERDES_PRCTL_COUNT))
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debug("Unknown SerDes lane protocol %d\n", lane_prtcl);
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else {
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serdes_prtcl_map[lane_prtcl] = 1;
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#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
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switch (lane_prtcl) {
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case QSGMII_A:
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case QSGMII_B:
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case QSGMII_C:
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case QSGMII_D:
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wriop_init_dpmac_qsgmii(sd, (int)lane_prtcl);
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break;
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default:
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if (lane_prtcl >= XFI1 && lane_prtcl <= XFI8)
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wriop_init_dpmac(sd,
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xfi_dpmac[lane_prtcl],
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(int)lane_prtcl);
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if (lane_prtcl >= SGMII1 &&
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lane_prtcl <= SGMII16)
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wriop_init_dpmac(sd, sgmii_dpmac[
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lane_prtcl],
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(int)lane_prtcl);
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break;
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}
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#endif
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}
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}
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/* Set the first element to indicate serdes has been initialized */
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serdes_prtcl_map[NONE] = 1;
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}
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__weak int get_serdes_volt(void)
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{
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return -1;
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}
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__weak int set_serdes_volt(int svdd)
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{
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return -1;
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}
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#define LNAGCR0_RT_RSTB 0x00600000
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#define RSTCTL_RESET_MASK 0x000000E0
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#define RSTCTL_RSTREQ 0x80000000
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#define RSTCTL_RST_DONE 0x40000000
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#define RSTCTL_RSTERR 0x20000000
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#define RSTCTL_SDEN 0x00000020
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#define RSTCTL_SDRST_B 0x00000040
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#define RSTCTL_PLLRST_B 0x00000080
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#define TCALCR_CALRST_B 0x08000000
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struct serdes_prctl_info {
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u32 id;
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u32 mask;
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u32 shift;
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};
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struct serdes_prctl_info srds_prctl_info[] = {
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#ifdef CONFIG_SYS_FSL_SRDS_1
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{.id = 1,
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.mask = FSL_CHASSIS3_SRDS1_PRTCL_MASK,
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.shift = FSL_CHASSIS3_SRDS1_PRTCL_SHIFT
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},
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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{.id = 2,
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.mask = FSL_CHASSIS3_SRDS2_PRTCL_MASK,
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.shift = FSL_CHASSIS3_SRDS2_PRTCL_SHIFT
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},
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#endif
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{} /* NULL ENTRY */
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};
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static int get_serdes_prctl_info_idx(u32 serdes_id)
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{
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int pos = 0;
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struct serdes_prctl_info *srds_info;
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/* loop until NULL ENTRY defined by .id=0 */
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for (srds_info = srds_prctl_info; srds_info->id != 0;
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srds_info++, pos++) {
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if (srds_info->id == serdes_id)
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return pos;
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}
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return -1;
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}
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static void do_enabled_lanes_reset(u32 serdes_id, u32 cfg,
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struct ccsr_serdes __iomem *serdes_base,
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bool cmplt)
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{
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int i, pos;
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u32 cfg_tmp;
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pos = get_serdes_prctl_info_idx(serdes_id);
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if (pos == -1) {
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printf("invalid serdes_id %d\n", serdes_id);
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return;
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}
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cfg_tmp = cfg & srds_prctl_info[pos].mask;
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cfg_tmp >>= srds_prctl_info[pos].shift;
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for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) {
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if (cmplt)
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setbits_le32(&serdes_base->lane[i].gcr0,
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LNAGCR0_RT_RSTB);
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else
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clrbits_le32(&serdes_base->lane[i].gcr0,
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LNAGCR0_RT_RSTB);
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}
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}
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static void do_pll_reset(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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clrbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RESET_MASK);
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RSTREQ);
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}
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udelay(1);
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}
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static void do_rx_tx_cal_reset(struct ccsr_serdes __iomem *serdes_base)
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{
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clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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}
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static void do_rx_tx_cal_reset_comp(u32 cfg, int i,
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struct ccsr_serdes __iomem *serdes_base)
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{
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if (!(cfg == 0x3 && i == 1)) {
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udelay(1);
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setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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}
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udelay(1);
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}
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static void do_pll_reset_done(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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u32 reg = 0;
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for (i = 0; i < 2; i++) {
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reg = in_le32(&serdes_base->bank[i].pllcr0);
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if (!(cfg & (0x1 << (1 - i))) && ((reg >> 23) & 0x1)) {
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RST_DONE);
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}
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}
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}
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static void do_serdes_enable(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_SDEN);
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_PLLRST_B);
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udelay(1);
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/* Take the Rx/Tx calibration out of reset */
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do_rx_tx_cal_reset_comp(cfg, i, serdes_base);
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}
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}
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static void do_pll_lock(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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u32 reg = 0;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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/* if the PLL is not locked, set RST_ERR */
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reg = in_le32(&serdes_base->bank[i].pllcr0);
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if (!((reg >> 23) & 0x1)) {
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RSTERR);
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} else {
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_SDRST_B);
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udelay(1);
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}
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}
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}
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int setup_serdes_volt(u32 svdd)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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struct ccsr_serdes __iomem *serdes1_base =
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(void *)CONFIG_SYS_FSL_LSCH3_SERDES_ADDR;
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u32 cfg_rcwsrds1 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS1_REGSR - 1]);
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#ifdef CONFIG_SYS_FSL_SRDS_2
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struct ccsr_serdes __iomem *serdes2_base =
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(void *)(CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + 0x10000);
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u32 cfg_rcwsrds2 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS2_REGSR - 1]);
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#endif
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u32 cfg_tmp;
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int svdd_cur, svdd_tar;
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int ret = 1;
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/* Only support switch SVDD to 900mV */
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if (svdd != 900)
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return -EINVAL;
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/* Scale up to the LTC resolution is 1/4096V */
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svdd = (svdd * 4096) / 1000;
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svdd_tar = svdd;
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svdd_cur = get_serdes_volt();
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if (svdd_cur < 0)
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return -EINVAL;
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debug("%s: current SVDD: %x; target SVDD: %x\n",
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__func__, svdd_cur, svdd_tar);
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if (svdd_cur == svdd_tar)
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return 0;
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/* Put the all enabled lanes in reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, false);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, false);
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#endif
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/* Put the all enabled PLL in reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_pll_reset(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_pll_reset(cfg_tmp, serdes2_base);
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#endif
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/* Put the Rx/Tx calibration into reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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do_rx_tx_cal_reset(serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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do_rx_tx_cal_reset(serdes2_base);
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#endif
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ret = set_serdes_volt(svdd);
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if (ret < 0) {
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printf("could not change SVDD\n");
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ret = -1;
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}
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/* For each PLL that’s not disabled via RCW enable the SERDES */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_serdes_enable(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_serdes_enable(cfg_tmp, serdes2_base);
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#endif
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/* Wait for at at least 625us, ensure the PLLs being reset are locked */
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udelay(800);
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_pll_lock(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_pll_lock(cfg_tmp, serdes2_base);
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#endif
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/* Take the all enabled lanes out of reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, true);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, true);
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#endif
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/* For each PLL being reset, and achieved PLL lock set RST_DONE */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_pll_reset_done(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_pll_reset_done(cfg_tmp, serdes2_base);
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#endif
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return ret;
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}
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void fsl_serdes_init(void)
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{
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#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
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int i , j;
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for (i = XFI1, j = 1; i <= XFI8; i++, j++)
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xfi_dpmac[i] = j;
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for (i = SGMII1, j = 1; i <= SGMII16; i++, j++)
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sgmii_dpmac[i] = j;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_1
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serdes_init(FSL_SRDS_1,
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CONFIG_SYS_FSL_LSCH3_SERDES_ADDR,
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FSL_CHASSIS3_SRDS1_REGSR,
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FSL_CHASSIS3_SRDS1_PRTCL_MASK,
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FSL_CHASSIS3_SRDS1_PRTCL_SHIFT,
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serdes1_prtcl_map);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
|
||
serdes_init(FSL_SRDS_2,
|
||
CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + FSL_SRDS_2 * 0x10000,
|
||
FSL_CHASSIS3_SRDS2_REGSR,
|
||
FSL_CHASSIS3_SRDS2_PRTCL_MASK,
|
||
FSL_CHASSIS3_SRDS2_PRTCL_SHIFT,
|
||
serdes2_prtcl_map);
|
||
#endif
|
||
}
|