1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * arch/arm/mach-orion5x/common.c
4 *
5 * Core functions for Marvell Orion 5x SoCs
6 *
7 * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/io.h>
13#include <linux/platform_device.h>
14#include <linux/dma-mapping.h>
15#include <linux/serial_8250.h>
16#include <linux/mv643xx_i2c.h>
17#include <linux/ata_platform.h>
18#include <linux/delay.h>
19#include <linux/clk-provider.h>
20#include <linux/cpu.h>
21#include <asm/page.h>
22#include <asm/setup.h>
23#include <asm/system_misc.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/map.h>
26#include <asm/mach/time.h>
27#include <linux/platform_data/mtd-orion_nand.h>
28#include <linux/platform_data/usb-ehci-orion.h>
29#include <plat/time.h>
30#include <plat/common.h>
31
32#include "bridge-regs.h"
33#include "common.h"
34#include "orion5x.h"
35
36/*****************************************************************************
37 * I/O Address Mapping
38 ****************************************************************************/
39static struct map_desc orion5x_io_desc[] __initdata = {
40	{
41		.virtual	= (unsigned long) ORION5X_REGS_VIRT_BASE,
42		.pfn		= __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
43		.length		= ORION5X_REGS_SIZE,
44		.type		= MT_DEVICE,
45	}, {
46		.virtual	= (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
47		.pfn		= __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
48		.length		= ORION5X_PCIE_WA_SIZE,
49		.type		= MT_DEVICE,
50	},
51};
52
53void __init orion5x_map_io(void)
54{
55	iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
56}
57
58
59/*****************************************************************************
60 * CLK tree
61 ****************************************************************************/
62static struct clk *tclk;
63
64void __init clk_init(void)
65{
66	tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, orion5x_tclk);
67
68	orion_clkdev_init(tclk);
69}
70
71/*****************************************************************************
72 * EHCI0
73 ****************************************************************************/
74void __init orion5x_ehci0_init(void)
75{
76	orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
77			EHCI_PHY_ORION);
78}
79
80
81/*****************************************************************************
82 * EHCI1
83 ****************************************************************************/
84void __init orion5x_ehci1_init(void)
85{
86	orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
87}
88
89
90/*****************************************************************************
91 * GE00
92 ****************************************************************************/
93void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
94{
95	orion_ge00_init(eth_data,
96			ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
97			IRQ_ORION5X_ETH_ERR,
98			MV643XX_TX_CSUM_DEFAULT_LIMIT);
99}
100
101
102/*****************************************************************************
103 * I2C
104 ****************************************************************************/
105void __init orion5x_i2c_init(void)
106{
107	orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
108
109}
110
111
112/*****************************************************************************
113 * SATA
114 ****************************************************************************/
115void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
116{
117	orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
118}
119
120
121/*****************************************************************************
122 * SPI
123 ****************************************************************************/
124void __init orion5x_spi_init(void)
125{
126	orion_spi_init(SPI_PHYS_BASE);
127}
128
129
130/*****************************************************************************
131 * UART0
132 ****************************************************************************/
133void __init orion5x_uart0_init(void)
134{
135	orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
136			 IRQ_ORION5X_UART0, tclk);
137}
138
139/*****************************************************************************
140 * UART1
141 ****************************************************************************/
142void __init orion5x_uart1_init(void)
143{
144	orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
145			 IRQ_ORION5X_UART1, tclk);
146}
147
148/*****************************************************************************
149 * XOR engine
150 ****************************************************************************/
151void __init orion5x_xor_init(void)
152{
153	orion_xor0_init(ORION5X_XOR_PHYS_BASE,
154			ORION5X_XOR_PHYS_BASE + 0x200,
155			IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
156}
157
158/*****************************************************************************
159 * Cryptographic Engines and Security Accelerator (CESA)
160 ****************************************************************************/
161static void __init orion5x_crypto_init(void)
162{
163	mvebu_mbus_add_window_by_id(ORION_MBUS_SRAM_TARGET,
164				    ORION_MBUS_SRAM_ATTR,
165				    ORION5X_SRAM_PHYS_BASE,
166				    ORION5X_SRAM_SIZE);
167	orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
168			  SZ_8K, IRQ_ORION5X_CESA);
169}
170
171/*****************************************************************************
172 * Watchdog
173 ****************************************************************************/
174static struct resource orion_wdt_resource[] = {
175		DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
176		DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
177};
178
179static struct platform_device orion_wdt_device = {
180	.name		= "orion_wdt",
181	.id		= -1,
182	.num_resources	= ARRAY_SIZE(orion_wdt_resource),
183	.resource	= orion_wdt_resource,
184};
185
186static void __init orion5x_wdt_init(void)
187{
188	platform_device_register(&orion_wdt_device);
189}
190
191
192/*****************************************************************************
193 * Time handling
194 ****************************************************************************/
195void __init orion5x_init_early(void)
196{
197	u32 rev, dev;
198	const char *mbus_soc_name;
199
200	orion_time_set_base(TIMER_VIRT_BASE);
201
202	/* Initialize the MBUS driver */
203	orion5x_pcie_id(&dev, &rev);
204	if (dev == MV88F5281_DEV_ID)
205		mbus_soc_name = "marvell,orion5x-88f5281-mbus";
206	else if (dev == MV88F5182_DEV_ID)
207		mbus_soc_name = "marvell,orion5x-88f5182-mbus";
208	else if (dev == MV88F5181_DEV_ID)
209		mbus_soc_name = "marvell,orion5x-88f5181-mbus";
210	else if (dev == MV88F6183_DEV_ID)
211		mbus_soc_name = "marvell,orion5x-88f6183-mbus";
212	else
213		mbus_soc_name = NULL;
214	mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
215			ORION5X_BRIDGE_WINS_SZ,
216			ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
217}
218
219void orion5x_setup_wins(void)
220{
221	/*
222	 * The PCIe windows will no longer be statically allocated
223	 * here once Orion5x is migrated to the pci-mvebu driver.
224	 */
225	mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET,
226					  ORION_MBUS_PCIE_IO_ATTR,
227					  ORION5X_PCIE_IO_PHYS_BASE,
228					  ORION5X_PCIE_IO_SIZE,
229					  ORION5X_PCIE_IO_BUS_BASE);
230	mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET,
231				    ORION_MBUS_PCIE_MEM_ATTR,
232				    ORION5X_PCIE_MEM_PHYS_BASE,
233				    ORION5X_PCIE_MEM_SIZE);
234	mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET,
235					  ORION_MBUS_PCI_IO_ATTR,
236					  ORION5X_PCI_IO_PHYS_BASE,
237					  ORION5X_PCI_IO_SIZE,
238					  ORION5X_PCI_IO_BUS_BASE);
239	mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET,
240				    ORION_MBUS_PCI_MEM_ATTR,
241				    ORION5X_PCI_MEM_PHYS_BASE,
242				    ORION5X_PCI_MEM_SIZE);
243}
244
245int orion5x_tclk;
246
247static int __init orion5x_find_tclk(void)
248{
249	u32 dev, rev;
250
251	orion5x_pcie_id(&dev, &rev);
252	if (dev == MV88F6183_DEV_ID &&
253	    (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
254		return 133333333;
255
256	return 166666667;
257}
258
259void __init orion5x_timer_init(void)
260{
261	orion5x_tclk = orion5x_find_tclk();
262
263	orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
264			IRQ_ORION5X_BRIDGE, orion5x_tclk);
265}
266
267
268/*****************************************************************************
269 * General
270 ****************************************************************************/
271/*
272 * Identify device ID and rev from PCIe configuration header space '0'.
273 */
274void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
275{
276	orion5x_pcie_id(dev, rev);
277
278	if (*dev == MV88F5281_DEV_ID) {
279		if (*rev == MV88F5281_REV_D2) {
280			*dev_name = "MV88F5281-D2";
281		} else if (*rev == MV88F5281_REV_D1) {
282			*dev_name = "MV88F5281-D1";
283		} else if (*rev == MV88F5281_REV_D0) {
284			*dev_name = "MV88F5281-D0";
285		} else {
286			*dev_name = "MV88F5281-Rev-Unsupported";
287		}
288	} else if (*dev == MV88F5182_DEV_ID) {
289		if (*rev == MV88F5182_REV_A2) {
290			*dev_name = "MV88F5182-A2";
291		} else {
292			*dev_name = "MV88F5182-Rev-Unsupported";
293		}
294	} else if (*dev == MV88F5181_DEV_ID) {
295		if (*rev == MV88F5181_REV_B1) {
296			*dev_name = "MV88F5181-Rev-B1";
297		} else if (*rev == MV88F5181L_REV_A1) {
298			*dev_name = "MV88F5181L-Rev-A1";
299		} else {
300			*dev_name = "MV88F5181(L)-Rev-Unsupported";
301		}
302	} else if (*dev == MV88F6183_DEV_ID) {
303		if (*rev == MV88F6183_REV_B0) {
304			*dev_name = "MV88F6183-Rev-B0";
305		} else {
306			*dev_name = "MV88F6183-Rev-Unsupported";
307		}
308	} else {
309		*dev_name = "Device-Unknown";
310	}
311}
312
313void __init orion5x_init(void)
314{
315	char *dev_name;
316	u32 dev, rev;
317
318	orion5x_id(&dev, &rev, &dev_name);
319	printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
320
321	/*
322	 * Setup Orion address map
323	 */
324	orion5x_setup_wins();
325
326	/* Setup root of clk tree */
327	clk_init();
328
329	/*
330	 * Don't issue "Wait for Interrupt" instruction if we are
331	 * running on D0 5281 silicon.
332	 */
333	if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
334		printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
335		cpu_idle_poll_ctrl(true);
336	}
337
338	/*
339	 * The 5082/5181l/5182/6082/6082l/6183 have crypto
340	 * while 5180n/5181/5281 don't have crypto.
341	 */
342	if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
343	    dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
344		orion5x_crypto_init();
345
346	/*
347	 * Register watchdog driver
348	 */
349	orion5x_wdt_init();
350}
351
352void orion5x_restart(enum reboot_mode mode, const char *cmd)
353{
354	/*
355	 * Enable and issue soft reset
356	 */
357	orion5x_setbits(RSTOUTn_MASK, (1 << 2));
358	orion5x_setbits(CPU_SOFT_RESET, 1);
359	mdelay(200);
360	orion5x_clrbits(CPU_SOFT_RESET, 1);
361}
362
363/*
364 * Many orion-based systems have buggy bootloader implementations.
365 * This is a common fixup for bogus memory tags.
366 */
367void __init tag_fixup_mem32(struct tag *t, char **from)
368{
369	for (; t->hdr.size; t = tag_next(t))
370		if (t->hdr.tag == ATAG_MEM &&
371		    (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
372		     t->u.mem.start & ~PAGE_MASK)) {
373			printk(KERN_WARNING
374			       "Clearing invalid memory bank %dKB@0x%08x\n",
375			       t->u.mem.size / 1024, t->u.mem.start);
376			t->hdr.tag = 0;
377		}
378}
379