#include <asm/errno.h>
#include "fsl_corenet_serdes.h"
-static u32 serdes_prtcl_map;
+/*
+ * The work-arounds for erratum SERDES8 and SERDES-A001 are linked together.
+ * The code is already very complicated as it is, and separating the two
+ * completely would just make things worse. We try to keep them as separate
+ * as possible, but for now we require SERDES8 if SERDES_A001 is defined.
+ */
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
+#ifndef CONFIG_SYS_P4080_ERRATUM_SERDES8
+#error "CONFIG_SYS_P4080_ERRATUM_SERDES_A001 requires CONFIG_SYS_P4080_ERRATUM_SERDES8"
+#endif
+#endif
-#define HWCONFIG_BUFFER_SIZE 128
+static u32 serdes_prtcl_map;
#ifdef DEBUG
static const char *serdes_prtcl_str[] = {
[SGMII_FM2_DTSEC2] = "SGMII_FM2_DTSEC2",
[SGMII_FM2_DTSEC3] = "SGMII_FM2_DTSEC3",
[SGMII_FM2_DTSEC4] = "SGMII_FM2_DTSEC4",
+ [SGMII_FM2_DTSEC5] = "SGMII_FM2_DTSEC5",
[XAUI_FM1] = "XAUI_FM1",
[XAUI_FM2] = "XAUI_FM2",
[AURORA] = "DEBUG",
{ 17, 163, FSL_SRDS_BANK_2 },
{ 18, 164, FSL_SRDS_BANK_2 },
{ 19, 165, FSL_SRDS_BANK_2 },
+#ifdef CONFIG_PPC_P4080
{ 20, 170, FSL_SRDS_BANK_3 },
{ 21, 171, FSL_SRDS_BANK_3 },
{ 22, 172, FSL_SRDS_BANK_3 },
{ 23, 173, FSL_SRDS_BANK_3 },
+#else
+ { 20, 166, FSL_SRDS_BANK_3 },
+ { 21, 167, FSL_SRDS_BANK_3 },
+ { 22, 168, FSL_SRDS_BANK_3 },
+ { 23, 169, FSL_SRDS_BANK_3 },
+#endif
};
int serdes_get_lane_idx(int lane)
#endif
#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
+/*
+ * Enable a SERDES bank that was disabled via the RCW
+ *
+ * We only call this function for SERDES8 and SERDES-A001 in cases we really
+ * want to enable the bank, whether we actually want to use the lanes or not,
+ * so make sure at least one lane is enabled. We're only enabling this one
+ * lane to satisfy errata requirements that the bank be enabled.
+ *
+ * We use a local variable instead of srds_lpd_b[] because we want drivers to
+ * think that the lanes actually are disabled.
+ */
static void enable_bank(ccsr_gur_t *gur, int bank)
{
u32 rcw5;
+ u32 temp_lpd_b = srds_lpd_b[bank];
+
+ /*
+ * If we're asked to disable all lanes, just pretend we're doing
+ * that.
+ */
+ if (temp_lpd_b == 0xF)
+ temp_lpd_b = 0xE;
/*
* Enable the lanes SRDS_LPD_Bn. The RCW bits are read-only in
rcw5 = in_be32(gur->rcwsr + 5);
if (bank == FSL_SRDS_BANK_2) {
rcw5 &= ~FSL_CORENET_RCWSRn_SRDS_LPD_B2;
- rcw5 |= srds_lpd_b[bank] << 26;
+ rcw5 |= temp_lpd_b << 26;
} else if (bank == FSL_SRDS_BANK_3) {
rcw5 &= ~FSL_CORENET_RCWSRn_SRDS_LPD_B3;
- rcw5 |= srds_lpd_b[bank] << 18;
+ rcw5 |= temp_lpd_b << 18;
} else {
printf("SERDES: enable_bank: bad bank %d\n", bank + 1);
return;
*/
setbits_be32(®s->bank[FSL_SRDS_BANK_3].pllcr1,
SRDS_PLLCR1_PLL_BWSEL);
-
- enable_bank(gur, FSL_SRDS_BANK_3);
break;
case 0x0f:
SRDS_PLLCR0_FRATE_SEL_MASK,
SRDS_PLLCR0_FRATE_SEL_6_25);
break;
- default:
- enable_bank(gur, FSL_SRDS_BANK_3);
}
+ enable_bank(gur, FSL_SRDS_BANK_3);
}
#endif
}
#endif
+/*
+ * Wait for the RSTDONE bit to get set, or a one-second timeout.
+ */
+static void wait_for_rstdone(unsigned int bank)
+{
+ serdes_corenet_t *srds_regs =
+ (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
+ unsigned long long end_tick;
+ u32 rstctl;
+
+ /* wait for reset complete or 1-second timeout */
+ end_tick = usec2ticks(1000000) + get_ticks();
+ do {
+ rstctl = in_be32(&srds_regs->bank[bank].rstctl);
+ if (rstctl & SRDS_RSTCTL_RSTDONE)
+ break;
+ } while (end_tick > get_ticks());
+
+ if (!(rstctl & SRDS_RSTCTL_RSTDONE))
+ printf("SERDES: timeout resetting bank %u\n", bank + 1);
+}
+
+
+void __soc_serdes_init(void)
+{
+ /* Allow for SoC-specific initialization in <SOC>_serdes.c */
+};
+void soc_serdes_init(void) __attribute__((weak, alias("__soc_serdes_init")));
+
void fsl_serdes_init(void)
{
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
int cfg;
serdes_corenet_t *srds_regs;
+#ifdef CONFIG_PPC_P5040
+ serdes_corenet_t *srds2_regs;
+#endif
int lane, bank, idx;
- enum srds_prtcl lane_prtcl;
- long long end_tick;
int have_bank[SRDS_MAX_BANK] = {};
#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
u32 serdes8_devdisr = 0;
const char *srds_lpd_arg;
size_t arglen;
#endif
-#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9
- enum srds_prtcl device;
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
+ int need_serdes_a001; /* TRUE == need work-around for SERDES A001 */
#endif
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
char buffer[HWCONFIG_BUFFER_SIZE];
char *buf = NULL;
*/
if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
buf = buffer;
+#endif
/* Is serdes enabled at all? */
if (!(in_be32(&gur->rcwsr[5]) & FSL_CORENET_RCWSR5_SRDS_EN))
srds_lpd_b[bank] =
simple_strtoul(srds_lpd_arg, NULL, 0) & 0xf;
}
+
+ if ((cfg == 0xf) || (cfg == 0x10)) {
+ /*
+ * For SERDES protocols 0xF and 0x10, force bank 3 to be
+ * disabled, because it is not supported.
+ */
+ srds_lpd_b[FSL_SRDS_BANK_3] = 0xF;
+ }
#endif
/* Look for banks with all lanes disabled, and power down the bank. */
}
}
+#ifdef CONFIG_PPC_P5040
+ /*
+ * Lanes on bank 4 on P5040 are commented-out, but for some SERDES
+ * protocols, these lanes are routed to SATA. We use serdes_prtcl_map
+ * to decide whether a protocol is supported on a given lane, so SATA
+ * will be identified as not supported, and therefore not initialized.
+ * So for protocols which use SATA on bank4, we add SATA support in
+ * serdes_prtcl_map.
+ */
+ switch (cfg) {
+ case 0x0:
+ case 0x1:
+ case 0x2:
+ case 0x3:
+ case 0x4:
+ case 0x5:
+ case 0x6:
+ case 0x7:
+ serdes_prtcl_map |= 1 << SATA1 | 1 << SATA2;
+ break;
+ default:
+ srds2_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES2_ADDR;
+
+ /* We don't need bank 4, so power it down */
+ setbits_be32(&srds2_regs->bank[0].rstctl, SRDS_RSTCTL_SDPD);
+ }
+#endif
+
+ soc_serdes_init();
+
#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
/*
* Bank two uses the clock from bank three, so if bank two is enabled,
have_bank[FSL_SRDS_BANK_3] = 1;
#endif
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
+ /*
+ * The work-aroud for erratum SERDES-A001 is needed only if bank two
+ * is disabled and bank three is enabled. The converse is also true,
+ * but SERDES8 ensures that bank 3 is always enabled if bank 2 is
+ * enabled, so there's no point in complicating the code to handle
+ * that situation.
+ */
+ need_serdes_a001 =
+ !have_bank[FSL_SRDS_BANK_2] && have_bank[FSL_SRDS_BANK_3];
+#endif
+
+ /* Power down the banks we're not interested in */
for (bank = 0; bank < SRDS_MAX_BANK; bank++) {
if (!have_bank[bank]) {
printf("SERDES: bank %d disabled\n", bank + 1);
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
+ /*
+ * Erratum SERDES-A001 says bank two needs to be powered
+ * down after bank three is powered up, so don't power
+ * down bank two here.
+ */
+ if (!need_serdes_a001 || (bank != FSL_SRDS_BANK_2))
+ setbits_be32(&srds_regs->bank[bank].rstctl,
+ SRDS_RSTCTL_SDPD);
+#else
setbits_be32(&srds_regs->bank[bank].rstctl,
SRDS_RSTCTL_SDPD);
+#endif
}
}
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004699
+ /*
+ * To avoid the situation that resulted in the P4080 erratum
+ * SERDES-8, a given SerDes bank will use the PLLs from the previous
+ * bank if one of the PLL frequencies is a multiple of the other. For
+ * instance, if bank 3 is running at 2.5GHz and bank 2 is at 1.25GHz,
+ * then bank 3 will use bank 2's PLL. P5040 Erratum A-004699 says
+ * that, in this situation, lane synchronization is not initiated. So
+ * when we detect a bank with a "borrowed" PLL, we have to manually
+ * initiate lane synchronization.
+ */
+ for (bank = FSL_SRDS_BANK_2; bank <= FSL_SRDS_BANK_3; bank++) {
+ /* Determine the first lane for this bank */
+ unsigned int lane;
+
+ for (lane = 0; lane < SRDS_MAX_LANES; lane++)
+ if (lanes[lane].bank == bank)
+ break;
+ idx = lanes[lane].idx;
+
+ /*
+ * Check if the PLL for the bank is borrowed. The UOTHL
+ * bit of the first lane will tell us that.
+ */
+ if (in_be32(&srds_regs->lane[idx].gcr0) & SRDS_GCR0_UOTHL) {
+ /* Manually start lane synchronization */
+ setbits_be32(&srds_regs->bank[bank].pllcr0,
+ SRDS_PLLCR0_PVCOCNT_EN);
+ }
+ }
+#endif
+
+#if defined(CONFIG_SYS_P4080_ERRATUM_SERDES8) || defined (CONFIG_SYS_P4080_ERRATUM_SERDES9)
for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
+ enum srds_prtcl lane_prtcl;
+
idx = serdes_get_lane_idx(lane);
lane_prtcl = serdes_get_prtcl(cfg, lane);
printf("%s ", serdes_prtcl_str[lane_prtcl]);
#endif
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9
+ /*
+ * Set BnTTLCRy0[FLT_SEL] = 000011 and set BnTTLCRy0[17] = 1 for
+ * each of the SerDes lanes selected as SGMII, XAUI, SRIO, or
+ * AURORA before the device is initialized.
+ */
+ switch (lane_prtcl) {
+ case SGMII_FM1_DTSEC1:
+ case SGMII_FM1_DTSEC2:
+ case SGMII_FM1_DTSEC3:
+ case SGMII_FM1_DTSEC4:
+ case SGMII_FM2_DTSEC1:
+ case SGMII_FM2_DTSEC2:
+ case SGMII_FM2_DTSEC3:
+ case SGMII_FM2_DTSEC4:
+ case SGMII_FM2_DTSEC5:
+ case XAUI_FM1:
+ case XAUI_FM2:
+ case SRIO1:
+ case SRIO2:
+ case AURORA:
+ clrsetbits_be32(&srds_regs->lane[idx].ttlcr0,
+ SRDS_TTLCR0_FLT_SEL_MASK,
+ SRDS_TTLCR0_FLT_SEL_750PPM |
+ SRDS_TTLCR0_PM_DIS);
+ default:
+ break;
+ }
+#endif
+
#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
switch (lane_prtcl) {
case PCIE1:
serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM2 |
FSL_CORENET_DEVDISR2_DTSEC2_4;
break;
+ case SGMII_FM2_DTSEC5:
+ serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM2 |
+ FSL_CORENET_DEVDISR2_DTSEC2_5;
+ break;
case XAUI_FM1:
+ serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM1 |
+ FSL_CORENET_DEVDISR2_10GEC1;
+ break;
case XAUI_FM2:
-#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9
- /*
- * Set BnTTLCRy0[FLT_SEL] = 000011 and set
- * BnTTLCRy0[17] = 1 for each of the SerDes lanes
- * selected as XAUI on each bank before XAUI is
- * initialized.
- */
- clrsetbits_be32(&srds_regs->lane[idx].ttlcr0,
- SRDS_TTLCR0_FLT_SEL_MASK,
- 0x03000000 | SRDS_TTLCR0_PM_DIS);
-#endif
- if (lane_prtcl == XAUI_FM1)
- serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM1 |
- FSL_CORENET_DEVDISR2_10GEC1;
- else
- serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM2 |
- FSL_CORENET_DEVDISR2_10GEC2;
+ serdes8_devdisr2 |= FSL_CORENET_DEVDISR2_FM2 |
+ FSL_CORENET_DEVDISR2_10GEC2;
break;
case AURORA:
break;
#endif
}
+#endif
#ifdef DEBUG
puts("\n");
#endif
for (idx = 0; idx < SRDS_MAX_BANK; idx++) {
- u32 rstctl;
-
bank = idx;
#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
p4080_erratum_serdes8(srds_regs, gur, serdes8_devdisr,
serdes8_devdisr2, cfg);
} else if (idx == 2) {
- /* Eable bank two now that bank three is enabled. */
+ /* Enable bank two now that bank three is enabled. */
enable_bank(gur, FSL_SRDS_BANK_2);
}
#endif
- /* reset banks for errata */
- setbits_be32(&srds_regs->bank[bank].rstctl, SRDS_RSTCTL_RST);
-
- /* wait for reset complete or 1-second timeout */
- end_tick = usec2ticks(1000000) + get_ticks();
- do {
- rstctl = in_be32(&srds_regs->bank[bank].rstctl);
- if (rstctl & SRDS_RSTCTL_RSTDONE)
- break;
- } while (end_tick > get_ticks());
-
- if (!(rstctl & SRDS_RSTCTL_RSTDONE)) {
- printf("SERDES: timeout resetting bank %d\n",
- bank + 1);
- continue;
- }
+ wait_for_rstdone(bank);
}
-#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9
- for (device = XAUI_FM1; device <= XAUI_FM2; device++) {
- if (is_serdes_configured(device))
- __serdes_reset_rx(srds_regs, cfg, device);
+#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
+ if (need_serdes_a001) {
+ /* Bank 3 has been enabled, so now we can disable bank 2 */
+ setbits_be32(&srds_regs->bank[FSL_SRDS_BANK_2].rstctl,
+ SRDS_RSTCTL_SDPD);
}
#endif
}
projects / karo-tx-uboot.git / blobdiff