2 * Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <linux/mbus.h>
11 #include <asm/pl310.h>
12 #include <asm/arch/cpu.h>
13 #include <asm/arch/soc.h>
16 #define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
17 #define DDR_SIZE_CS_OFF(n) (0x0004 + ((n) << 3))
19 static struct mbus_win windows[] = {
21 { MBUS_SPI_BASE, MBUS_SPI_SIZE,
22 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_SPIFLASH },
25 { MBUS_BOOTROM_BASE, MBUS_BOOTROM_SIZE,
26 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_BOOTROM },
29 void lowlevel_init(void)
32 * Dummy implementation, we only need LOWLEVEL_INIT
33 * on Armada to configure CP15 in start.S / cpu_init_cp15()
37 void reset_cpu(unsigned long ignored)
39 struct mvebu_system_registers *reg =
40 (struct mvebu_system_registers *)MVEBU_SYSTEM_REG_BASE;
42 writel(readl(®->rstoutn_mask) | 1, ®->rstoutn_mask);
43 writel(readl(®->sys_soft_rst) | 1, ®->sys_soft_rst);
48 int mvebu_soc_family(void)
50 u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
59 return MVEBU_SOC_A375;
64 return MVEBU_SOC_A38X;
69 return MVEBU_SOC_MSYS;
72 return MVEBU_SOC_UNKNOWN;
75 #if defined(CONFIG_DISPLAY_CPUINFO)
77 #if defined(CONFIG_ARMADA_375)
78 /* SAR frequency values for Armada 375 */
79 static const struct sar_freq_modes sar_freq_tab[] = {
80 { 0, 0x0, 266, 133, 266 },
81 { 1, 0x0, 333, 167, 167 },
82 { 2, 0x0, 333, 167, 222 },
83 { 3, 0x0, 333, 167, 333 },
84 { 4, 0x0, 400, 200, 200 },
85 { 5, 0x0, 400, 200, 267 },
86 { 6, 0x0, 400, 200, 400 },
87 { 7, 0x0, 500, 250, 250 },
88 { 8, 0x0, 500, 250, 334 },
89 { 9, 0x0, 500, 250, 500 },
90 { 10, 0x0, 533, 267, 267 },
91 { 11, 0x0, 533, 267, 356 },
92 { 12, 0x0, 533, 267, 533 },
93 { 13, 0x0, 600, 300, 300 },
94 { 14, 0x0, 600, 300, 400 },
95 { 15, 0x0, 600, 300, 600 },
96 { 16, 0x0, 666, 333, 333 },
97 { 17, 0x0, 666, 333, 444 },
98 { 18, 0x0, 666, 333, 666 },
99 { 19, 0x0, 800, 400, 267 },
100 { 20, 0x0, 800, 400, 400 },
101 { 21, 0x0, 800, 400, 534 },
102 { 22, 0x0, 900, 450, 300 },
103 { 23, 0x0, 900, 450, 450 },
104 { 24, 0x0, 900, 450, 600 },
105 { 25, 0x0, 1000, 500, 500 },
106 { 26, 0x0, 1000, 500, 667 },
107 { 27, 0x0, 1000, 333, 500 },
108 { 28, 0x0, 400, 400, 400 },
109 { 29, 0x0, 1100, 550, 550 },
110 { 0xff, 0xff, 0, 0, 0 } /* 0xff marks end of array */
112 #elif defined(CONFIG_ARMADA_38X)
113 /* SAR frequency values for Armada 38x */
114 static const struct sar_freq_modes sar_freq_tab[] = {
115 { 0x0, 0x0, 666, 333, 333 },
116 { 0x2, 0x0, 800, 400, 400 },
117 { 0x4, 0x0, 1066, 533, 533 },
118 { 0x6, 0x0, 1200, 600, 600 },
119 { 0x8, 0x0, 1332, 666, 666 },
120 { 0xc, 0x0, 1600, 800, 800 },
121 { 0x10, 0x0, 1866, 933, 933 },
122 { 0x13, 0x0, 2000, 1000, 933 },
123 { 0xff, 0xff, 0, 0, 0 } /* 0xff marks end of array */
126 /* SAR frequency values for Armada XP */
127 static const struct sar_freq_modes sar_freq_tab[] = {
128 { 0xa, 0x5, 800, 400, 400 },
129 { 0x1, 0x5, 1066, 533, 533 },
130 { 0x2, 0x5, 1200, 600, 600 },
131 { 0x2, 0x9, 1200, 600, 400 },
132 { 0x3, 0x5, 1333, 667, 667 },
133 { 0x4, 0x5, 1500, 750, 750 },
134 { 0x4, 0x9, 1500, 750, 500 },
135 { 0xb, 0x9, 1600, 800, 533 },
136 { 0xb, 0xa, 1600, 800, 640 },
137 { 0xb, 0x5, 1600, 800, 800 },
138 { 0xff, 0xff, 0, 0, 0 } /* 0xff marks end of array */
142 void get_sar_freq(struct sar_freq_modes *sar_freq)
148 #if defined(CONFIG_ARMADA_375)
149 val = readl(CONFIG_SAR2_REG); /* SAR - Sample At Reset */
151 val = readl(CONFIG_SAR_REG); /* SAR - Sample At Reset */
153 freq = (val & SAR_CPU_FREQ_MASK) >> SAR_CPU_FREQ_OFFS;
154 #if defined(SAR2_CPU_FREQ_MASK)
156 * Shift CPU0 clock frequency select bit from SAR2 register
157 * into correct position
159 freq |= ((readl(CONFIG_SAR2_REG) & SAR2_CPU_FREQ_MASK)
160 >> SAR2_CPU_FREQ_OFFS) << 3;
162 for (i = 0; sar_freq_tab[i].val != 0xff; i++) {
163 if (sar_freq_tab[i].val == freq) {
164 #if defined(CONFIG_ARMADA_375) || defined(CONFIG_ARMADA_38X)
165 *sar_freq = sar_freq_tab[i];
171 ffc = (val & SAR_FFC_FREQ_MASK) >>
173 for (k = i; sar_freq_tab[k].ffc != 0xff; k++) {
174 if (sar_freq_tab[k].ffc == ffc) {
175 *sar_freq = sar_freq_tab[k];
184 /* SAR value not found, return 0 for frequencies */
185 *sar_freq = sar_freq_tab[i - 1];
188 int print_cpuinfo(void)
190 u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
191 u8 revid = readl(MVEBU_REG_PCIE_REVID) & 0xff;
192 struct sar_freq_modes sar_freq;
218 case SOC_98DX3236_ID:
221 case SOC_98DX3336_ID:
224 case SOC_98DX4251_ID:
232 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
241 printf("?? (%x)", revid);
246 if (mvebu_soc_family() == MVEBU_SOC_A375) {
248 case MV_88F67XX_A0_ID:
252 printf("?? (%x)", revid);
257 if (mvebu_soc_family() == MVEBU_SOC_A38X) {
259 case MV_88F68XX_Z1_ID:
262 case MV_88F68XX_A0_ID:
266 printf("?? (%x)", revid);
271 get_sar_freq(&sar_freq);
272 printf(" at %d MHz\n", sar_freq.p_clk);
276 #endif /* CONFIG_DISPLAY_CPUINFO */
279 * This function initialize Controller DRAM Fastpath windows.
280 * It takes the CS size information from the 0x1500 scratch registers
281 * and sets the correct windows sizes and base addresses accordingly.
283 * These values are set in the scratch registers by the Marvell
284 * DDR3 training code, which is executed by the BootROM before the
285 * main payload (U-Boot) is executed. This training code is currently
286 * only available in the Marvell U-Boot version. It needs to be
287 * ported to mainline U-Boot SPL at some point.
289 static void update_sdram_window_sizes(void)
295 for (i = 0; i < SDRAM_MAX_CS; i++) {
296 size = readl((MVEBU_SDRAM_SCRATCH + (i * 8))) & SDRAM_ADDR_MASK;
298 size |= ~(SDRAM_ADDR_MASK);
300 /* Set Base Address */
301 temp = (base & 0xFF000000ll) | ((base >> 32) & 0xF);
302 writel(temp, MVEBU_SDRAM_BASE + DDR_BASE_CS_OFF(i));
305 * Check if out of max window size and resize
308 temp = (readl(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i)) &
309 ~(SDRAM_ADDR_MASK)) | 1;
310 temp |= (size & SDRAM_ADDR_MASK);
311 writel(temp, MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i));
313 base += ((u64)size + 1);
316 * Disable window if not used, otherwise this
317 * leads to overlapping enabled windows with
318 * pretty strange results
320 clrbits_le32(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i), 1);
325 void mmu_disable(void)
328 "mrc p15, 0, r0, c1, c0, 0\n"
330 "mcr p15, 0, r0, c1, c0, 0\n");
333 #ifdef CONFIG_ARCH_CPU_INIT
334 static void set_cbar(u32 addr)
336 asm("mcr p15, 4, %0, c15, c0" : : "r" (addr));
339 #define MV_USB_PHY_BASE (MVEBU_AXP_USB_BASE + 0x800)
340 #define MV_USB_PHY_PLL_REG(reg) (MV_USB_PHY_BASE | (((reg) & 0xF) << 2))
341 #define MV_USB_X3_BASE(addr) (MVEBU_AXP_USB_BASE | BIT(11) | \
342 (((addr) & 0xF) << 6))
343 #define MV_USB_X3_PHY_CHANNEL(dev, reg) (MV_USB_X3_BASE((dev) + 1) | \
344 (((reg) & 0xF) << 2))
346 static void setup_usb_phys(void)
354 /* Setup PLL frequency */
355 /* USB REF frequency = 25 MHz */
356 clrsetbits_le32(MV_USB_PHY_PLL_REG(1), 0x3ff, 0x605);
358 /* Power up PLL and PHY channel */
359 setbits_le32(MV_USB_PHY_PLL_REG(2), BIT(9));
361 /* Assert VCOCAL_START */
362 setbits_le32(MV_USB_PHY_PLL_REG(1), BIT(21));
367 * USB PHY init (change from defaults) specific for 40nm (78X30 78X60)
370 for (dev = 0; dev < 3; dev++) {
371 setbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 3), BIT(15));
373 /* Assert REG_RCAL_START in channel REG 1 */
374 setbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 1), BIT(12));
376 clrbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 1), BIT(12));
381 * This function is not called from the SPL U-Boot version
383 int arch_cpu_init(void)
385 struct pl310_regs *const pl310 =
386 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
389 * Only with disabled MMU its possible to switch the base
390 * register address on Armada 38x. Without this the SDRAM
391 * located at >= 0x4000.0000 is also not accessible, as its
392 * still locked to cache.
396 /* Linux expects the internal registers to be at 0xf1000000 */
397 writel(SOC_REGS_PHY_BASE, INTREG_BASE_ADDR_REG);
398 set_cbar(SOC_REGS_PHY_BASE + 0xC000);
401 * From this stage on, the SoC detection is working. As we have
402 * configured the internal register base to the value used
403 * in the macros / defines in the U-Boot header (soc.h).
406 if (mvebu_soc_family() == MVEBU_SOC_A38X) {
408 * To fully release / unlock this area from cache, we need
409 * to flush all caches and disable the L2 cache.
413 clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
417 * We need to call mvebu_mbus_probe() before calling
418 * update_sdram_window_sizes() as it disables all previously
419 * configured mbus windows and then configures them as
420 * required for U-Boot. Calling update_sdram_window_sizes()
421 * without this configuration will not work, as the internal
422 * registers can't be accessed reliably because of potenial
424 * After updating the SDRAM access windows we need to call
425 * mvebu_mbus_probe() again, as this now correctly configures
426 * the SDRAM areas that are later used by the MVEBU drivers
431 * First disable all windows
433 mvebu_mbus_probe(NULL, 0);
435 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
437 * Now the SDRAM access windows can be reconfigured using
438 * the information in the SDRAM scratch pad registers
440 update_sdram_window_sizes();
444 * Finally the mbus windows can be configured with the
445 * updated SDRAM sizes
447 mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
449 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
450 /* Enable GBE0, GBE1, LCD and NFC PUP */
451 clrsetbits_le32(ARMADA_XP_PUP_ENABLE, 0,
452 GE0_PUP_EN | GE1_PUP_EN | LCD_PUP_EN |
453 NAND_PUP_EN | SPI_PUP_EN);
455 /* Configure USB PLL and PHYs on AXP */
459 /* Enable NAND and NAND arbiter */
460 clrsetbits_le32(MVEBU_SOC_DEV_MUX_REG, 0, NAND_EN | NAND_ARBITER_EN);
462 /* Disable MBUS error propagation */
463 clrsetbits_le32(SOC_COHERENCY_FABRIC_CTRL_REG, MBUS_ERR_PROP_EN, 0);
467 #endif /* CONFIG_ARCH_CPU_INIT */
469 u32 mvebu_get_nand_clock(void)
473 if (mvebu_soc_family() == MVEBU_SOC_A38X)
474 reg = MVEBU_DFX_DIV_CLK_CTRL(1);
476 reg = MVEBU_CORE_DIV_CLK_CTRL(1);
478 return CONFIG_SYS_MVEBU_PLL_CLOCK /
480 NAND_ECC_DIVCKL_RATIO_MASK) >> NAND_ECC_DIVCKL_RATIO_OFFS);
484 * SOC specific misc init
486 #if defined(CONFIG_ARCH_MISC_INIT)
487 int arch_misc_init(void)
489 /* Nothing yet, perhaps we need something here later */
492 #endif /* CONFIG_ARCH_MISC_INIT */
494 #ifdef CONFIG_MMC_SDHCI_MV
495 int board_mmc_init(bd_t *bis)
497 mv_sdh_init(MVEBU_SDIO_BASE, 0, 0,
498 SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD);
504 #ifdef CONFIG_SCSI_AHCI_PLAT
505 #define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0
506 #define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4
508 #define AHCI_WINDOW_CTRL(win) (0x60 + ((win) << 4))
509 #define AHCI_WINDOW_BASE(win) (0x64 + ((win) << 4))
510 #define AHCI_WINDOW_SIZE(win) (0x68 + ((win) << 4))
512 static void ahci_mvebu_mbus_config(void __iomem *base)
514 const struct mbus_dram_target_info *dram;
517 dram = mvebu_mbus_dram_info();
519 for (i = 0; i < 4; i++) {
520 writel(0, base + AHCI_WINDOW_CTRL(i));
521 writel(0, base + AHCI_WINDOW_BASE(i));
522 writel(0, base + AHCI_WINDOW_SIZE(i));
525 for (i = 0; i < dram->num_cs; i++) {
526 const struct mbus_dram_window *cs = dram->cs + i;
528 writel((cs->mbus_attr << 8) |
529 (dram->mbus_dram_target_id << 4) | 1,
530 base + AHCI_WINDOW_CTRL(i));
531 writel(cs->base >> 16, base + AHCI_WINDOW_BASE(i));
532 writel(((cs->size - 1) & 0xffff0000),
533 base + AHCI_WINDOW_SIZE(i));
537 static void ahci_mvebu_regret_option(void __iomem *base)
540 * Enable the regret bit to allow the SATA unit to regret a
541 * request that didn't receive an acknowlegde and avoid a
544 writel(0x4, base + AHCI_VENDOR_SPECIFIC_0_ADDR);
545 writel(0x80, base + AHCI_VENDOR_SPECIFIC_0_DATA);
550 printf("MVEBU SATA INIT\n");
551 ahci_mvebu_mbus_config((void __iomem *)MVEBU_SATA0_BASE);
552 ahci_mvebu_regret_option((void __iomem *)MVEBU_SATA0_BASE);
553 ahci_init((void __iomem *)MVEBU_SATA0_BASE);
557 #ifdef CONFIG_USB_XHCI_MVEBU
558 #define USB3_MAX_WINDOWS 4
559 #define USB3_WIN_CTRL(w) (0x0 + ((w) * 8))
560 #define USB3_WIN_BASE(w) (0x4 + ((w) * 8))
562 static void xhci_mvebu_mbus_config(void __iomem *base,
563 const struct mbus_dram_target_info *dram)
567 for (i = 0; i < USB3_MAX_WINDOWS; i++) {
568 writel(0, base + USB3_WIN_CTRL(i));
569 writel(0, base + USB3_WIN_BASE(i));
572 for (i = 0; i < dram->num_cs; i++) {
573 const struct mbus_dram_window *cs = dram->cs + i;
575 /* Write size, attributes and target id to control register */
576 writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
577 (dram->mbus_dram_target_id << 4) | 1,
578 base + USB3_WIN_CTRL(i));
580 /* Write base address to base register */
581 writel((cs->base & 0xffff0000), base + USB3_WIN_BASE(i));
585 int board_xhci_enable(fdt_addr_t base)
587 const struct mbus_dram_target_info *dram;
589 printf("MVEBU XHCI INIT controller @ 0x%lx\n", base);
591 dram = mvebu_mbus_dram_info();
592 xhci_mvebu_mbus_config((void __iomem *)base, dram);
598 void enable_caches(void)
600 /* Avoid problem with e.g. neta ethernet driver */
601 invalidate_dcache_all();
604 * Armada 375 still has some problems with d-cache enabled in the
605 * ethernet driver (mvpp2). So lets keep the d-cache disabled
606 * until this is solved.
608 if (mvebu_soc_family() != MVEBU_SOC_A375) {
609 /* Enable D-cache. I-cache is already enabled in start.S */
614 void v7_outer_cache_enable(void)
616 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
617 struct pl310_regs *const pl310 =
618 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
621 /* The L2 cache is already disabled at this point */
624 * For Aurora cache in no outer mode, enable via the CP15
625 * coprocessor broadcasting of cache commands to L2.
627 asm volatile("mrc p15, 1, %0, c15, c2, 0" : "=r" (u));
628 u |= BIT(8); /* Set the FW bit */
629 asm volatile("mcr p15, 1, %0, c15, c2, 0" : : "r" (u));
633 /* Enable the L2 cache */
634 setbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
638 void v7_outer_cache_disable(void)
640 struct pl310_regs *const pl310 =
641 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
643 clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);