2 * Copyright (C) 2014-2015 Stefan Roese <sr@denx.de>
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/mbus.h>
12 #include <asm/pl310.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/soc.h>
17 #define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
18 #define DDR_SIZE_CS_OFF(n) (0x0004 + ((n) << 3))
20 static struct mbus_win windows[] = {
22 { MBUS_SPI_BASE, MBUS_SPI_SIZE,
23 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_SPIFLASH },
26 { MBUS_BOOTROM_BASE, MBUS_BOOTROM_SIZE,
27 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_BOOTROM },
30 void lowlevel_init(void)
33 * Dummy implementation, we only need LOWLEVEL_INIT
34 * on Armada to configure CP15 in start.S / cpu_init_cp15()
38 void reset_cpu(unsigned long ignored)
40 struct mvebu_system_registers *reg =
41 (struct mvebu_system_registers *)MVEBU_SYSTEM_REG_BASE;
43 writel(readl(®->rstoutn_mask) | 1, ®->rstoutn_mask);
44 writel(readl(®->sys_soft_rst) | 1, ®->sys_soft_rst);
49 int mvebu_soc_family(void)
51 u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
53 if (devid == SOC_MV78460_ID)
56 if (devid == SOC_88F6810_ID || devid == SOC_88F6820_ID ||
57 devid == SOC_88F6828_ID)
58 return MVEBU_SOC_A38X;
60 return MVEBU_SOC_UNKNOWN;
63 #if defined(CONFIG_DISPLAY_CPUINFO)
64 int print_cpuinfo(void)
66 u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
67 u8 revid = readl(MVEBU_REG_PCIE_REVID) & 0xff;
89 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
98 printf("?? (%x)\n", revid);
103 if (mvebu_soc_family() == MVEBU_SOC_A38X) {
105 case MV_88F68XX_Z1_ID:
108 case MV_88F68XX_A0_ID:
112 printf("?? (%x)\n", revid);
119 #endif /* CONFIG_DISPLAY_CPUINFO */
122 * This function initialize Controller DRAM Fastpath windows.
123 * It takes the CS size information from the 0x1500 scratch registers
124 * and sets the correct windows sizes and base addresses accordingly.
126 * These values are set in the scratch registers by the Marvell
127 * DDR3 training code, which is executed by the BootROM before the
128 * main payload (U-Boot) is executed. This training code is currently
129 * only available in the Marvell U-Boot version. It needs to be
130 * ported to mainline U-Boot SPL at some point.
132 static void update_sdram_window_sizes(void)
138 for (i = 0; i < SDRAM_MAX_CS; i++) {
139 size = readl((MVEBU_SDRAM_SCRATCH + (i * 8))) & SDRAM_ADDR_MASK;
141 size |= ~(SDRAM_ADDR_MASK);
143 /* Set Base Address */
144 temp = (base & 0xFF000000ll) | ((base >> 32) & 0xF);
145 writel(temp, MVEBU_SDRAM_BASE + DDR_BASE_CS_OFF(i));
148 * Check if out of max window size and resize
151 temp = (readl(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i)) &
152 ~(SDRAM_ADDR_MASK)) | 1;
153 temp |= (size & SDRAM_ADDR_MASK);
154 writel(temp, MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i));
156 base += ((u64)size + 1);
159 * Disable window if not used, otherwise this
160 * leads to overlapping enabled windows with
161 * pretty strange results
163 clrbits_le32(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i), 1);
168 void mmu_disable(void)
171 "mrc p15, 0, r0, c1, c0, 0\n"
173 "mcr p15, 0, r0, c1, c0, 0\n");
176 #ifdef CONFIG_ARCH_CPU_INIT
177 static void set_cbar(u32 addr)
179 asm("mcr p15, 4, %0, c15, c0" : : "r" (addr));
182 #define MV_USB_PHY_BASE (MVEBU_AXP_USB_BASE + 0x800)
183 #define MV_USB_PHY_PLL_REG(reg) (MV_USB_PHY_BASE | (((reg) & 0xF) << 2))
184 #define MV_USB_X3_BASE(addr) (MVEBU_AXP_USB_BASE | BIT(11) | \
185 (((addr) & 0xF) << 6))
186 #define MV_USB_X3_PHY_CHANNEL(dev, reg) (MV_USB_X3_BASE((dev) + 1) | \
187 (((reg) & 0xF) << 2))
189 static void setup_usb_phys(void)
197 /* Setup PLL frequency */
198 /* USB REF frequency = 25 MHz */
199 clrsetbits_le32(MV_USB_PHY_PLL_REG(1), 0x3ff, 0x605);
201 /* Power up PLL and PHY channel */
202 clrsetbits_le32(MV_USB_PHY_PLL_REG(2), 0, BIT(9));
204 /* Assert VCOCAL_START */
205 clrsetbits_le32(MV_USB_PHY_PLL_REG(1), 0, BIT(21));
210 * USB PHY init (change from defaults) specific for 40nm (78X30 78X60)
213 for (dev = 0; dev < 3; dev++) {
214 clrsetbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 3), 0, BIT(15));
216 /* Assert REG_RCAL_START in channel REG 1 */
217 clrsetbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 1), 0, BIT(12));
219 clrsetbits_le32(MV_USB_X3_PHY_CHANNEL(dev, 1), BIT(12), 0);
224 * This function is not called from the SPL U-Boot version
226 int arch_cpu_init(void)
228 struct pl310_regs *const pl310 =
229 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
232 * Only with disabled MMU its possible to switch the base
233 * register address on Armada 38x. Without this the SDRAM
234 * located at >= 0x4000.0000 is also not accessible, as its
235 * still locked to cache.
239 /* Linux expects the internal registers to be at 0xf1000000 */
240 writel(SOC_REGS_PHY_BASE, INTREG_BASE_ADDR_REG);
241 set_cbar(SOC_REGS_PHY_BASE + 0xC000);
244 * From this stage on, the SoC detection is working. As we have
245 * configured the internal register base to the value used
246 * in the macros / defines in the U-Boot header (soc.h).
250 * To fully release / unlock this area from cache, we need
251 * to flush all caches and disable the L2 cache.
255 clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
258 * We need to call mvebu_mbus_probe() before calling
259 * update_sdram_window_sizes() as it disables all previously
260 * configured mbus windows and then configures them as
261 * required for U-Boot. Calling update_sdram_window_sizes()
262 * without this configuration will not work, as the internal
263 * registers can't be accessed reliably because of potenial
265 * After updating the SDRAM access windows we need to call
266 * mvebu_mbus_probe() again, as this now correctly configures
267 * the SDRAM areas that are later used by the MVEBU drivers
272 * First disable all windows
274 mvebu_mbus_probe(NULL, 0);
276 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
278 * Now the SDRAM access windows can be reconfigured using
279 * the information in the SDRAM scratch pad registers
281 update_sdram_window_sizes();
285 * Finally the mbus windows can be configured with the
286 * updated SDRAM sizes
288 mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
290 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
291 /* Enable GBE0, GBE1, LCD and NFC PUP */
292 clrsetbits_le32(ARMADA_XP_PUP_ENABLE, 0,
293 GE0_PUP_EN | GE1_PUP_EN | LCD_PUP_EN |
294 NAND_PUP_EN | SPI_PUP_EN);
296 /* Configure USB PLL and PHYs on AXP */
300 /* Enable NAND and NAND arbiter */
301 clrsetbits_le32(MVEBU_SOC_DEV_MUX_REG, 0, NAND_EN | NAND_ARBITER_EN);
303 /* Disable MBUS error propagation */
304 clrsetbits_le32(SOC_COHERENCY_FABRIC_CTRL_REG, MBUS_ERR_PROP_EN, 0);
308 #endif /* CONFIG_ARCH_CPU_INIT */
310 u32 mvebu_get_nand_clock(void)
312 return CONFIG_SYS_MVEBU_PLL_CLOCK /
313 ((readl(MVEBU_CORE_DIV_CLK_CTRL(1)) &
314 NAND_ECC_DIVCKL_RATIO_MASK) >> NAND_ECC_DIVCKL_RATIO_OFFS);
318 * SOC specific misc init
320 #if defined(CONFIG_ARCH_MISC_INIT)
321 int arch_misc_init(void)
323 /* Nothing yet, perhaps we need something here later */
326 #endif /* CONFIG_ARCH_MISC_INIT */
328 #ifdef CONFIG_MV_SDHCI
329 int board_mmc_init(bd_t *bis)
331 mv_sdh_init(MVEBU_SDIO_BASE, 0, 0,
332 SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD);
338 #ifdef CONFIG_SCSI_AHCI_PLAT
339 #define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0
340 #define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4
342 #define AHCI_WINDOW_CTRL(win) (0x60 + ((win) << 4))
343 #define AHCI_WINDOW_BASE(win) (0x64 + ((win) << 4))
344 #define AHCI_WINDOW_SIZE(win) (0x68 + ((win) << 4))
346 static void ahci_mvebu_mbus_config(void __iomem *base)
348 const struct mbus_dram_target_info *dram;
351 dram = mvebu_mbus_dram_info();
353 for (i = 0; i < 4; i++) {
354 writel(0, base + AHCI_WINDOW_CTRL(i));
355 writel(0, base + AHCI_WINDOW_BASE(i));
356 writel(0, base + AHCI_WINDOW_SIZE(i));
359 for (i = 0; i < dram->num_cs; i++) {
360 const struct mbus_dram_window *cs = dram->cs + i;
362 writel((cs->mbus_attr << 8) |
363 (dram->mbus_dram_target_id << 4) | 1,
364 base + AHCI_WINDOW_CTRL(i));
365 writel(cs->base >> 16, base + AHCI_WINDOW_BASE(i));
366 writel(((cs->size - 1) & 0xffff0000),
367 base + AHCI_WINDOW_SIZE(i));
371 static void ahci_mvebu_regret_option(void __iomem *base)
374 * Enable the regret bit to allow the SATA unit to regret a
375 * request that didn't receive an acknowlegde and avoid a
378 writel(0x4, base + AHCI_VENDOR_SPECIFIC_0_ADDR);
379 writel(0x80, base + AHCI_VENDOR_SPECIFIC_0_DATA);
384 printf("MVEBU SATA INIT\n");
385 ahci_mvebu_mbus_config((void __iomem *)MVEBU_SATA0_BASE);
386 ahci_mvebu_regret_option((void __iomem *)MVEBU_SATA0_BASE);
387 ahci_init((void __iomem *)MVEBU_SATA0_BASE);
391 void enable_caches(void)
393 /* Avoid problem with e.g. neta ethernet driver */
394 invalidate_dcache_all();
396 /* Enable D-cache. I-cache is already enabled in start.S */
400 void v7_outer_cache_enable(void)
402 struct pl310_regs *const pl310 =
403 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
405 /* The L2 cache is already disabled at this point */
407 if (mvebu_soc_family() == MVEBU_SOC_AXP) {
411 * For Aurora cache in no outer mode, enable via the CP15
412 * coprocessor broadcasting of cache commands to L2.
414 asm volatile("mrc p15, 1, %0, c15, c2, 0" : "=r" (u));
415 u |= BIT(8); /* Set the FW bit */
416 asm volatile("mcr p15, 1, %0, c15, c2, 0" : : "r" (u));
420 /* Enable the L2 cache */
421 setbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
425 void v7_outer_cache_disable(void)
427 struct pl310_regs *const pl310 =
428 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
430 clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);