diff options
Diffstat (limited to 'board/freescale/t4qds/t4240qds.c')
| -rw-r--r-- | board/freescale/t4qds/t4240qds.c | 838 |
1 files changed, 838 insertions, 0 deletions
diff --git a/board/freescale/t4qds/t4240qds.c b/board/freescale/t4qds/t4240qds.c new file mode 100644 index 0000000000..7ee0f54786 --- /dev/null +++ b/board/freescale/t4qds/t4240qds.c @@ -0,0 +1,838 @@ +/* + * Copyright 2009-2012 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <i2c.h> +#include <netdev.h> +#include <linux/compiler.h> +#include <asm/mmu.h> +#include <asm/processor.h> +#include <asm/cache.h> +#include <asm/immap_85xx.h> +#include <asm/fsl_law.h> +#include <asm/fsl_serdes.h> +#include <asm/fsl_portals.h> +#include <asm/fsl_liodn.h> +#include <fm_eth.h> + +#include "../common/qixis.h" +#include "../common/vsc3316_3308.h" +#include "t4qds.h" +#include "t4240qds_qixis.h" + +DECLARE_GLOBAL_DATA_PTR; + +static const int8_t vsc3316_fsm1_tx[8][2] = { {0, 0}, {1, 1}, {6, 6}, {7, 7}, + {8, 8}, {9, 9}, {14, 14}, {15, 15} }; + +static const int8_t vsc3316_fsm2_tx[8][2] = { {2, 2}, {3, 3}, {4, 4}, {5, 5}, + {10, 10}, {11, 11}, {12, 12}, {13, 13} }; + +static const int8_t vsc3316_fsm1_rx[8][2] = { {2, 12}, {3, 13}, {4, 5}, {5, 4}, + {10, 11}, {11, 10}, {12, 2}, {13, 3} }; + +static const int8_t vsc3316_fsm2_rx[8][2] = { {0, 15}, {1, 14}, {6, 7}, {7, 6}, + {8, 9}, {9, 8}, {14, 1}, {15, 0} }; + +int checkboard(void) +{ + char buf[64]; + u8 sw; + struct cpu_type *cpu = gd->arch.cpu; + unsigned int i; + + printf("Board: %sQDS, ", cpu->name); + printf("Sys ID: 0x%02x, Sys Ver: 0x%02x, ", + QIXIS_READ(id), QIXIS_READ(arch)); + + sw = QIXIS_READ(brdcfg[0]); + sw = (sw & QIXIS_LBMAP_MASK) >> QIXIS_LBMAP_SHIFT; + + if (sw < 0x8) + printf("vBank: %d\n", sw); + else if (sw == 0x8) + puts("Promjet\n"); + else if (sw == 0x9) + puts("NAND\n"); + else + printf("invalid setting of SW%u\n", QIXIS_LBMAP_SWITCH); + + printf("FPGA: v%d (%s), build %d", + (int)QIXIS_READ(scver), qixis_read_tag(buf), + (int)qixis_read_minor()); + /* the timestamp string contains "\n" at the end */ + printf(" on %s", qixis_read_time(buf)); + + /* + * Display the actual SERDES reference clocks as configured by the + * dip switches on the board. Note that the SWx registers could + * technically be set to force the reference clocks to match the + * values that the SERDES expects (or vice versa). For now, however, + * we just display both values and hope the user notices when they + * don't match. + */ + puts("SERDES Reference Clocks: "); + sw = QIXIS_READ(brdcfg[2]); + for (i = 0; i < MAX_SERDES; i++) { + static const char * const freq[] = { + "100", "125", "156.25", "161.1328125"}; + unsigned int clock = (sw >> (6 - 2 * i)) & 3; + + printf("SERDES%u=%sMHz ", i+1, freq[clock]); + } + puts("\n"); + + return 0; +} + +int select_i2c_ch_pca9547(u8 ch) +{ + int ret; + + ret = i2c_write(I2C_MUX_PCA_ADDR_PRI, 0, 1, &ch, 1); + if (ret) { + puts("PCA: failed to select proper channel\n"); + return ret; + } + + return 0; +} + +/* + * read_voltage from sensor on I2C bus + * We use average of 4 readings, waiting for 532us befor another reading + */ +#define NUM_READINGS 4 /* prefer to be power of 2 for efficiency */ +#define WAIT_FOR_ADC 532 /* wait for 532 microseconds for ADC */ + +static inline int read_voltage(void) +{ + int i, ret, voltage_read = 0; + u16 vol_mon; + + for (i = 0; i < NUM_READINGS; i++) { + ret = i2c_read(I2C_VOL_MONITOR_ADDR, + I2C_VOL_MONITOR_BUS_V_OFFSET, 1, (void *)&vol_mon, 2); + if (ret) { + printf("VID: failed to read core voltage\n"); + return ret; + } + if (vol_mon & I2C_VOL_MONITOR_BUS_V_OVF) { + printf("VID: Core voltage sensor error\n"); + return -1; + } + debug("VID: bus voltage reads 0x%04x\n", vol_mon); + /* LSB = 4mv */ + voltage_read += (vol_mon >> I2C_VOL_MONITOR_BUS_V_SHIFT) * 4; + udelay(WAIT_FOR_ADC); + } + /* calculate the average */ + voltage_read /= NUM_READINGS; + + return voltage_read; +} + +/* + * We need to calculate how long before the voltage starts to drop or increase + * It returns with the loop count. Each loop takes several readings (532us) + */ +static inline int wait_for_voltage_change(int vdd_last) +{ + int timeout, vdd_current; + + vdd_current = read_voltage(); + /* wait until voltage starts to drop */ + for (timeout = 0; abs(vdd_last - vdd_current) <= 4 && + timeout < 100; timeout++) { + vdd_current = read_voltage(); + } + if (timeout >= 100) { + printf("VID: Voltage adjustment timeout\n"); + return -1; + } + return timeout; +} + +/* + * argument 'wait' is the time we know the voltage difference can be measured + * this function keeps reading the voltage until it is stable + */ +static inline int wait_for_voltage_stable(int wait) +{ + int timeout, vdd_current, vdd_last; + + vdd_last = read_voltage(); + udelay(wait * NUM_READINGS * WAIT_FOR_ADC); + /* wait until voltage is stable */ + vdd_current = read_voltage(); + for (timeout = 0; abs(vdd_last - vdd_current) >= 4 && + timeout < 100; timeout++) { + vdd_last = vdd_current; + udelay(wait * NUM_READINGS * WAIT_FOR_ADC); + vdd_current = read_voltage(); + } + if (timeout >= 100) { + printf("VID: Voltage adjustment timeout\n"); + return -1; + } + + return vdd_current; +} + +static inline int set_voltage(u8 vid) +{ + int wait, vdd_last; + + vdd_last = read_voltage(); + QIXIS_WRITE(brdcfg[6], vid); + wait = wait_for_voltage_change(vdd_last); + if (wait < 0) + return -1; + debug("VID: Waited %d us\n", wait * NUM_READINGS * WAIT_FOR_ADC); + wait = wait ? wait : 1; + + vdd_last = wait_for_voltage_stable(wait); + if (vdd_last < 0) + return -1; + debug("VID: Current voltage is %d mV\n", vdd_last); + + return vdd_last; +} + + +static int adjust_vdd(ulong vdd_override) +{ + int re_enable = disable_interrupts(); + ccsr_gur_t __iomem *gur = + (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + u32 fusesr; + u8 vid, vid_current; + int vdd_target, vdd_current, vdd_last; + int ret; + unsigned long vdd_string_override; + char *vdd_string; + static const uint16_t vdd[32] = { + 0, /* unused */ + 9875, /* 0.9875V */ + 9750, + 9625, + 9500, + 9375, + 9250, + 9125, + 9000, + 8875, + 8750, + 8625, + 8500, + 8375, + 8250, + 8125, + 10000, /* 1.0000V */ + 10125, + 10250, + 10375, + 10500, + 10625, + 10750, + 10875, + 11000, + 0, /* reserved */ + }; + struct vdd_drive { + u8 vid; + unsigned voltage; + }; + + ret = select_i2c_ch_pca9547(I2C_MUX_CH_VOL_MONITOR); + if (ret) { + debug("VID: I2c failed to switch channel\n"); + ret = -1; + goto exit; + } + + /* get the voltage ID from fuse status register */ + fusesr = in_be32(&gur->dcfg_fusesr); + vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_VID_SHIFT) & + FSL_CORENET_DCFG_FUSESR_VID_MASK; + if (vid == FSL_CORENET_DCFG_FUSESR_VID_MASK) { + vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_ALTVID_SHIFT) & + FSL_CORENET_DCFG_FUSESR_ALTVID_MASK; + } + vdd_target = vdd[vid]; + + /* check override variable for overriding VDD */ + vdd_string = getenv("t4240qds_vdd_mv"); + if (vdd_override == 0 && vdd_string && + !strict_strtoul(vdd_string, 10, &vdd_string_override)) + vdd_override = vdd_string_override; + if (vdd_override >= 819 && vdd_override <= 1212) { + vdd_target = vdd_override * 10; /* convert to 1/10 mV */ + debug("VDD override is %lu\n", vdd_override); + } else if (vdd_override != 0) { + printf("Invalid value.\n"); + } + + if (vdd_target == 0) { + debug("VID: VID not used\n"); + ret = 0; + goto exit; + } else { + /* round up and divice by 10 to get a value in mV */ + vdd_target = DIV_ROUND_UP(vdd_target, 10); + debug("VID: vid = %d mV\n", vdd_target); + } + + /* + * Check current board VID setting + * Voltage regulator support output to 6.250mv step + * The highes voltage allowed for this board is (vid=0x40) 1.21250V + * the lowest is (vid=0x7f) 0.81875V + */ + vid_current = QIXIS_READ(brdcfg[6]); + vdd_current = 121250 - (vid_current - 0x40) * 625; + debug("VID: Current vid setting is (0x%x) %d mV\n", + vid_current, vdd_current/100); + + /* + * Read voltage monitor to check real voltage. + * Voltage monitor LSB is 4mv. + */ + vdd_last = read_voltage(); + if (vdd_last < 0) { + printf("VID: Could not read voltage sensor abort VID adjustment\n"); + ret = -1; + goto exit; + } + debug("VID: Core voltage is at %d mV\n", vdd_last); + /* + * Adjust voltage to at or 8mV above target. + * Each step of adjustment is 6.25mV. + * Stepping down too fast may cause over current. + */ + while (vdd_last > 0 && vid_current < 0x80 && + vdd_last > (vdd_target + 8)) { + vid_current++; + vdd_last = set_voltage(vid_current); + } + /* + * Check if we need to step up + * This happens when board voltage switch was set too low + */ + while (vdd_last > 0 && vid_current >= 0x40 && + vdd_last < vdd_target + 2) { + vid_current--; + vdd_last = set_voltage(vid_current); + } + if (vdd_last > 0) + printf("VID: Core voltage %d mV\n", vdd_last); + else + ret = -1; + +exit: + if (re_enable) + enable_interrupts(); + return ret; +} + +/* Configure Crossbar switches for Front-Side SerDes Ports */ +int config_frontside_crossbar_vsc3316(void) +{ + ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + u32 srds_prtcl_s1, srds_prtcl_s2; + int ret; + + ret = select_i2c_ch_pca9547(I2C_MUX_CH_VSC3316_FS); + if (ret) + return ret; + + srds_prtcl_s1 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS1_PRTCL; + srds_prtcl_s1 >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT; + if (srds_prtcl_s1) { + ret = vsc3316_config(VSC3316_FSM_TX_ADDR, vsc3316_fsm1_tx, 8); + if (ret) + return ret; + ret = vsc3316_config(VSC3316_FSM_RX_ADDR, vsc3316_fsm1_rx, 8); + if (ret) + return ret; + } + + srds_prtcl_s2 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS2_PRTCL; + srds_prtcl_s2 >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT; + if (srds_prtcl_s2) { + ret = vsc3316_config(VSC3316_FSM_TX_ADDR, vsc3316_fsm2_tx, 8); + if (ret) + return ret; + ret = vsc3316_config(VSC3316_FSM_RX_ADDR, vsc3316_fsm2_rx, 8); + if (ret) + return ret; + } + + return 0; +} + +int config_backside_crossbar_mux(void) +{ + ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + u32 srds_prtcl_s3, srds_prtcl_s4; + u8 brdcfg; + + srds_prtcl_s3 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS3_PRTCL; + srds_prtcl_s3 >>= FSL_CORENET2_RCWSR4_SRDS3_PRTCL_SHIFT; + switch (srds_prtcl_s3) { + case 0: + /* SerDes3 is not enabled */ + break; + case 2: + case 9: + case 10: + /* SD3(0:7) => SLOT5(0:7) */ + brdcfg = QIXIS_READ(brdcfg[12]); + brdcfg &= ~BRDCFG12_SD3MX_MASK; + brdcfg |= BRDCFG12_SD3MX_SLOT5; + QIXIS_WRITE(brdcfg[12], brdcfg); + break; + case 4: + case 6: + case 8: + case 12: + case 14: + case 16: + case 17: + case 19: + case 20: + /* SD3(4:7) => SLOT6(0:3) */ + brdcfg = QIXIS_READ(brdcfg[12]); + brdcfg &= ~BRDCFG12_SD3MX_MASK; + brdcfg |= BRDCFG12_SD3MX_SLOT6; + QIXIS_WRITE(brdcfg[12], brdcfg); + break; + default: + printf("WARNING: unsupported for SerDes3 Protocol %d\n", + srds_prtcl_s3); + return -1; + } + + srds_prtcl_s4 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS4_PRTCL; + srds_prtcl_s4 >>= FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT; + switch (srds_prtcl_s4) { + case 0: + /* SerDes4 is not enabled */ + break; + case 2: + /* 10b, SD4(0:7) => SLOT7(0:7) */ + brdcfg = QIXIS_READ(brdcfg[12]); + brdcfg &= ~BRDCFG12_SD4MX_MASK; + brdcfg |= BRDCFG12_SD4MX_SLOT7; + QIXIS_WRITE(brdcfg[12], brdcfg); + break; + case 4: + case 6: + case 8: + /* x1b, SD4(4:7) => SLOT8(0:3) */ + brdcfg = QIXIS_READ(brdcfg[12]); + brdcfg &= ~BRDCFG12_SD4MX_MASK; + brdcfg |= BRDCFG12_SD4MX_SLOT8; + QIXIS_WRITE(brdcfg[12], brdcfg); + break; + case 10: + case 12: + case 14: + case 16: + case 18: + /* 00b, SD4(4:5) => AURORA, SD4(6:7) => SATA */ + brdcfg = QIXIS_READ(brdcfg[12]); + brdcfg &= ~BRDCFG12_SD4MX_MASK; + brdcfg |= BRDCFG12_SD4MX_AURO_SATA; + QIXIS_WRITE(brdcfg[12], brdcfg); + break; + default: + printf("WARNING: unsupported for SerDes4 Protocol %d\n", + srds_prtcl_s4); + return -1; + } + + return 0; +} + +int board_early_init_r(void) +{ + const unsigned int flashbase = CONFIG_SYS_FLASH_BASE; + const u8 flash_esel = find_tlb_idx((void *)flashbase, 1); + + /* + * Remap Boot flash + PROMJET region to caching-inhibited + * so that flash can be erased properly. + */ + + /* Flush d-cache and invalidate i-cache of any FLASH data */ + flush_dcache(); + invalidate_icache(); + + /* invalidate existing TLB entry for flash + promjet */ + disable_tlb(flash_esel); + + set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS, + MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, + 0, flash_esel, BOOKE_PAGESZ_256M, 1); + + set_liodns(); +#ifdef CONFIG_SYS_DPAA_QBMAN + setup_portals(); +#endif + + /* Disable remote I2C connection to qixis fpga */ + QIXIS_WRITE(brdcfg[5], QIXIS_READ(brdcfg[5]) & ~BRDCFG5_IRE); + + /* + * Adjust core voltage according to voltage ID + * This function changes I2C mux to channel 2. + */ + if (adjust_vdd(0)) + printf("Warning: Adjusting core voltage failed.\n"); + + /* Configure board SERDES ports crossbar */ + config_frontside_crossbar_vsc3316(); + config_backside_crossbar_mux(); + select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); + + return 0; +} + +unsigned long get_board_sys_clk(void) +{ + u8 sysclk_conf = QIXIS_READ(brdcfg[1]); +#ifdef CONFIG_FSL_QIXIS_CLOCK_MEASUREMENT + /* use accurate clock measurement */ + int freq = QIXIS_READ(clk_freq[0]) << 8 | QIXIS_READ(clk_freq[1]); + int base = QIXIS_READ(clk_base[0]) << 8 | QIXIS_READ(clk_base[1]); + u32 val; + + val = freq * base; + if (val) { + debug("SYS Clock measurement is: %d\n", val); + return val; + } else { + printf("Warning: SYS clock measurement is invalid, using value from brdcfg1.\n"); + } +#endif + + switch (sysclk_conf & 0x0F) { + case QIXIS_SYSCLK_83: + return 83333333; + case QIXIS_SYSCLK_100: + return 100000000; + case QIXIS_SYSCLK_125: + return 125000000; + case QIXIS_SYSCLK_133: + return 133333333; + case QIXIS_SYSCLK_150: + return 150000000; + case QIXIS_SYSCLK_160: + return 160000000; + case QIXIS_SYSCLK_166: + return 166666666; + } + return 66666666; +} + +unsigned long get_board_ddr_clk(void) +{ + u8 ddrclk_conf = QIXIS_READ(brdcfg[1]); +#ifdef CONFIG_FSL_QIXIS_CLOCK_MEASUREMENT + /* use accurate clock measurement */ + int freq = QIXIS_READ(clk_freq[2]) << 8 | QIXIS_READ(clk_freq[3]); + int base = QIXIS_READ(clk_base[0]) << 8 | QIXIS_READ(clk_base[1]); + u32 val; + + val = freq * base; + if (val) { + debug("DDR Clock measurement is: %d\n", val); + return val; + } else { + printf("Warning: DDR clock measurement is invalid, using value from brdcfg1.\n"); + } +#endif + + switch ((ddrclk_conf & 0x30) >> 4) { + case QIXIS_DDRCLK_100: + return 100000000; + case QIXIS_DDRCLK_125: + return 125000000; + case QIXIS_DDRCLK_133: + return 133333333; + } + return 66666666; +} + +static const char *serdes_clock_to_string(u32 clock) +{ + switch (clock) { + case SRDS_PLLCR0_RFCK_SEL_100: + return "100"; + case SRDS_PLLCR0_RFCK_SEL_125: + return "125"; + case SRDS_PLLCR0_RFCK_SEL_156_25: + return "156.25"; + case SRDS_PLLCR0_RFCK_SEL_161_13: + return "161.1328125"; + default: + return "???"; + } +} + +int misc_init_r(void) +{ + u8 sw; + serdes_corenet_t *srds_regs = + (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR; + u32 actual[MAX_SERDES]; + unsigned int i; + + sw = QIXIS_READ(brdcfg[2]); + for (i = 0; i < MAX_SERDES; i++) { + unsigned int clock = (sw >> (6 - 2 * i)) & 3; + switch (clock) { + case 0: + actual[i] = SRDS_PLLCR0_RFCK_SEL_100; + break; + case 1: + actual[i] = SRDS_PLLCR0_RFCK_SEL_125; + break; + case 2: + actual[i] = SRDS_PLLCR0_RFCK_SEL_156_25; + break; + case 3: + actual[i] = SRDS_PLLCR0_RFCK_SEL_161_13; + break; + } + } + + for (i = 0; i < MAX_SERDES; i++) { + u32 pllcr0 = srds_regs->bank[i].pllcr0; + u32 expected = pllcr0 & SRDS_PLLCR0_RFCK_SEL_MASK; + if (expected != actual[i]) { + printf("Warning: SERDES%u expects reference clock %sMHz, but actual is %sMHz\n", + i + 1, serdes_clock_to_string(expected), + serdes_clock_to_string(actual[i])); + } + } + + return 0; +} + +void ft_board_setup(void *blob, bd_t *bd) +{ + phys_addr_t base; + phys_size_t size; + + ft_cpu_setup(blob, bd); + + base = getenv_bootm_low(); + size = getenv_bootm_size(); + + fdt_fixup_memory(blob, (u64)base, (u64)size); + +#ifdef CONFIG_PCI + pci_of_setup(blob, bd); +#endif + + fdt_fixup_liodn(blob); + fdt_fixup_dr_usb(blob, bd); + +#ifdef CONFIG_SYS_DPAA_FMAN + fdt_fixup_fman_ethernet(blob); + fdt_fixup_board_enet(blob); +#endif +} + +/* + * This function is called by bdinfo to print detail board information. + * As an exmaple for future board, we organize the messages into + * several sections. If applicable, the message is in the format of + * <name> = <value> + * It should aligned with normal output of bdinfo command. + * + * Voltage: Core, DDR and another configurable voltages + * Clock : Critical clocks which are not printed already + * RCW : RCW source if not printed already + * Misc : Other important information not in above catagories + */ +void board_detail(void) +{ + int i; + u8 brdcfg[16], dutcfg[16], rst_ctl; + int vdd, rcwsrc; + static const char * const clk[] = {"66.67", "100", "125", "133.33"}; + + for (i = 0; i < 16; i++) { + brdcfg[i] = qixis_read(offsetof(struct qixis, brdcfg[0]) + i); + dutcfg[i] = qixis_read(offsetof(struct qixis, dutcfg[0]) + i); + } + + /* Voltage secion */ + if (!select_i2c_ch_pca9547(I2C_MUX_CH_VOL_MONITOR)) { + vdd = read_voltage(); + if (vdd > 0) + printf("Core voltage= %d mV\n", vdd); + select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); + } + + printf("XVDD = 1.%d V\n", ((brdcfg[8] & 0xf) - 4) * 5 + 25); + + /* clock section */ + printf("SYSCLK = %s MHz\nDDRCLK = %s MHz\n", + clk[(brdcfg[11] >> 2) & 0x3], clk[brdcfg[11] & 3]); + + /* RCW section */ + rcwsrc = (dutcfg[0] << 1) + (dutcfg[1] & 1); + puts("RCW source = "); + switch (rcwsrc) { + case 0x017: + case 0x01f: + puts("8-bit NOR\n"); + break; + case 0x027: + case 0x02F: + puts("16-bit NOR\n"); + break; + case 0x040: + puts("SDHC/eMMC\n"); + break; + case 0x044: + puts("SPI 16-bit addressing\n"); + break; + case 0x045: + puts("SPI 24-bit addressing\n"); + break; + case 0x048: + puts("I2C normal addressing\n"); + break; + case 0x049: + puts("I2C extended addressing\n"); + break; + case 0x108: + case 0x109: + case 0x10a: + case 0x10b: + puts("8-bit NAND, 2KB\n"); + break; + default: + if ((rcwsrc >= 0x080) && (rcwsrc <= 0x09f)) + puts("Hard-coded RCW\n"); + else if ((rcwsrc >= 0x110) && (rcwsrc <= 0x11f)) + puts("8-bit NAND, 4KB\n"); + else + puts("unknown\n"); + break; + } + + /* Misc section */ + rst_ctl = QIXIS_READ(rst_ctl); + puts("HRESET_REQ = "); + switch (rst_ctl & 0x30) { + case 0x00: + puts("Ignored\n"); + break; + case 0x10: + puts("Assert HRESET\n"); + break; + case 0x30: + puts("Reset system\n"); + break; + default: + puts("N/A\n"); + break; + } +} + +/* + * Reverse engineering switch settings. + * Some bits cannot be figured out. They will be displayed as + * underscore in binary format. mask[] has those bits. + * Some bits are calculated differently than the actual switches + * if booting with overriding by FPGA. + */ +void qixis_dump_switch(void) +{ + int i; + u8 sw[9]; + + /* + * Any bit with 1 means that bit cannot be reverse engineered. + * It will be displayed as _ in binary format. + */ + static const u8 mask[] = {0, 0, 0, 0, 0, 0x1, 0xcf, 0x3f, 0x1f}; + char buf[10]; + u8 brdcfg[16], dutcfg[16]; + + for (i = 0; i < 16; i++) { + brdcfg[i] = qixis_read(offsetof(struct qixis, brdcfg[0]) + i); + dutcfg[i] = qixis_read(offsetof(struct qixis, dutcfg[0]) + i); + } + + sw[0] = dutcfg[0]; + sw[1] = (dutcfg[1] << 0x07) | + ((dutcfg[12] & 0xC0) >> 1) | + ((dutcfg[11] & 0xE0) >> 3) | + ((dutcfg[6] & 0x80) >> 6) | + ((dutcfg[1] & 0x80) >> 7); + sw[2] = ((brdcfg[1] & 0x0f) << 4) | + ((brdcfg[1] & 0x30) >> 2) | + ((brdcfg[1] & 0x40) >> 5) | + ((brdcfg[1] & 0x80) >> 7); + sw[3] = brdcfg[2]; + sw[4] = ((dutcfg[2] & 0x01) << 7) | + ((dutcfg[2] & 0x06) << 4) | + ((~QIXIS_READ(present)) & 0x10) | + ((brdcfg[3] & 0x80) >> 4) | + ((brdcfg[3] & 0x01) << 2) | + ((brdcfg[6] == 0x62) ? 3 : + ((brdcfg[6] == 0x5a) ? 2 : + ((brdcfg[6] == 0x5e) ? 1 : 0))); + sw[5] = ((brdcfg[0] & 0x0f) << 4) | + ((QIXIS_READ(rst_ctl) & 0x30) >> 2) | + ((brdcfg[0] & 0x40) >> 5); + sw[6] = (brdcfg[11] & 0x20) | + ((brdcfg[5] & 0x02) << 3); + sw[7] = (((~QIXIS_READ(rst_ctl)) & 0x40) << 1) | + ((brdcfg[5] & 0x10) << 2); + sw[8] = ((brdcfg[12] & 0x08) << 4) | + ((brdcfg[12] & 0x03) << 5); + + puts("DIP switch (reverse-engineering)\n"); + for (i = 0; i < 9; i++) { + printf("SW%d = 0b%s (0x%02x)\n", + i + 1, byte_to_binary_mask(sw[i], mask[i], buf), sw[i]); + } +} + +static int do_vdd_adjust(cmd_tbl_t *cmdtp, + int flag, int argc, + char * const argv[]) +{ + ulong override; + + if (argc < 2) + return CMD_RET_USAGE; + if (!strict_strtoul(argv[1], 10, &override)) + adjust_vdd(override); /* the value is checked by callee */ + else + return CMD_RET_USAGE; + + return 0; +} + +U_BOOT_CMD( + vdd_override, 2, 0, do_vdd_adjust, + "Override VDD", + "- override with the voltage specified in mV, eg. 1050" +); |
