1 // SPDX-License-Identifier: GPL-2.0+
4 * Marvell Semiconductor <www.marvell.com>
5 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
11 #include <asm/cache.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/soc.h>
15 #include <mvebu_mmc.h>
17 void reset_cpu(unsigned long ignored)
19 struct kwcpu_registers *cpureg =
20 (struct kwcpu_registers *)KW_CPU_REG_BASE;
22 writel(readl(&cpureg->rstoutn_mask) | (1 << 2),
23 &cpureg->rstoutn_mask);
24 writel(readl(&cpureg->sys_soft_rst) | 1,
25 &cpureg->sys_soft_rst);
31 * Used with the Base register to set the address window size and location.
32 * Must be programmed from LSB to MSB as sequence of ones followed by
33 * sequence of zeros. The number of ones specifies the size of the window in
34 * 64 KByte granularity (e.g., a value of 0x00FF specifies 256 = 16 MByte).
35 * NOTE: A value of 0x0 specifies 64-KByte size.
37 unsigned int kw_winctrl_calcsize(unsigned int sizeval)
41 u32 val = sizeval >> 1;
43 for (i = 0; val >= 0x10000; i++) {
47 return (0x0000ffff & j);
50 static struct mbus_win windows[] = {
51 /* Window 0: PCIE MEM address space */
52 { KW_DEFADR_PCI_MEM, 1024 * 1024 * 256,
53 KWCPU_TARGET_PCIE, KWCPU_ATTR_PCIE_MEM },
55 /* Window 1: PCIE IO address space */
56 { KW_DEFADR_PCI_IO, 1024 * 64,
57 KWCPU_TARGET_PCIE, KWCPU_ATTR_PCIE_IO },
59 /* Window 2: NAND Flash address space */
60 { KW_DEFADR_NANDF, 1024 * 1024 * 128,
61 KWCPU_TARGET_MEMORY, KWCPU_ATTR_NANDFLASH },
63 /* Window 3: SPI Flash address space */
64 { KW_DEFADR_SPIF, 1024 * 1024 * 128,
65 KWCPU_TARGET_MEMORY, KWCPU_ATTR_SPIFLASH },
67 /* Window 4: BOOT Memory address space */
68 { KW_DEFADR_BOOTROM, 1024 * 1024 * 128,
69 KWCPU_TARGET_MEMORY, KWCPU_ATTR_BOOTROM },
71 /* Window 5: Security SRAM address space */
72 { KW_DEFADR_SASRAM, 1024 * 64,
73 KWCPU_TARGET_SASRAM, KWCPU_ATTR_SASRAM },
77 * SYSRSTn Duration Counter Support
79 * Kirkwood SoC implements a hardware-based SYSRSTn duration counter.
80 * When SYSRSTn is asserted low, a SYSRSTn duration counter is running.
81 * The SYSRSTn duration counter is useful for implementing a manufacturer
82 * or factory reset. Upon a long reset assertion that is greater than a
83 * pre-configured environment variable value for sysrstdelay,
84 * The counter value is stored in the SYSRSTn Length Counter Register
85 * The counter is based on the 25-MHz reference clock (40ns)
86 * It is a 29-bit counter, yielding a maximum counting duration of
87 * 2^29/25 MHz (21.4 seconds). When the counter reach its maximum value,
88 * it remains at this value until counter reset is triggered by setting
89 * bit 31 of KW_REG_SYSRST_CNT
91 static void kw_sysrst_action(void)
94 char *s = env_get("sysrstcmd");
97 debug("Error.. %s failed, check sysrstcmd\n",
102 debug("Starting %s process...\n", __FUNCTION__);
103 ret = run_command(s, 0);
105 debug("Error.. %s failed\n", __FUNCTION__);
107 debug("%s process finished\n", __FUNCTION__);
110 static void kw_sysrst_check(void)
112 u32 sysrst_cnt, sysrst_dly;
116 * no action if sysrstdelay environment variable is not defined
118 s = env_get("sysrstdelay");
122 /* read sysrstdelay value */
123 sysrst_dly = (u32) simple_strtoul(s, NULL, 10);
125 /* read SysRst Length counter register (bits 28:0) */
126 sysrst_cnt = (0x1fffffff & readl(KW_REG_SYSRST_CNT));
127 debug("H/w Rst hold time: %d.%d secs\n",
128 sysrst_cnt / SYSRST_CNT_1SEC_VAL,
129 sysrst_cnt % SYSRST_CNT_1SEC_VAL);
131 /* clear the counter for next valid read*/
132 writel(1 << 31, KW_REG_SYSRST_CNT);
136 * if H/w Reset key is pressed and hold for time
137 * more than sysrst_dly in seconds
139 if (sysrst_cnt >= SYSRST_CNT_1SEC_VAL * sysrst_dly)
143 #if defined(CONFIG_DISPLAY_CPUINFO)
144 int print_cpuinfo(void)
147 u16 devid = (readl(KW_REG_PCIE_DEVID) >> 16) & 0xffff;
148 u8 revid = readl(KW_REG_PCIE_REVID) & 0xff;
150 if ((readl(KW_REG_DEVICE_ID) & 0x03) > 2) {
151 printf("Error.. %s:Unsupported Kirkwood SoC 88F%04x\n", __FUNCTION__, devid);
159 else if (devid == 0x6282)
175 printf("SoC: Kirkwood 88F%04x_%s\n", devid, rev);
178 #endif /* CONFIG_DISPLAY_CPUINFO */
180 #ifdef CONFIG_ARCH_CPU_INIT
181 int arch_cpu_init(void)
184 struct kwcpu_registers *cpureg =
185 (struct kwcpu_registers *)KW_CPU_REG_BASE;
187 /* Linux expects the internal registers to be at 0xf1000000 */
188 writel(KW_REGS_PHY_BASE, KW_OFFSET_REG);
190 /* Enable and invalidate L2 cache in write through mode */
191 writel(readl(&cpureg->l2_cfg) | 0x18, &cpureg->l2_cfg);
192 invalidate_l2_cache();
194 #ifdef CONFIG_KIRKWOOD_RGMII_PAD_1V8
196 * Configures the I/O voltage of the pads connected to Egigabit
197 * Ethernet interface to 1.8V
198 * By default it is set to 3.3V
200 reg = readl(KW_REG_MPP_OUT_DRV_REG);
202 writel(reg, KW_REG_MPP_OUT_DRV_REG);
204 #ifdef CONFIG_KIRKWOOD_EGIGA_INIT
206 * Set egiga port0/1 in normal functional mode
207 * This is required becasue on kirkwood by default ports are in reset mode
208 * OS egiga driver may not have provision to set them in normal mode
209 * and if u-boot is build without network support, network may fail at OS level
211 reg = readl(KWGBE_PORT_SERIAL_CONTROL1_REG(0));
212 reg &= ~(1 << 4); /* Clear PortReset Bit */
213 writel(reg, (KWGBE_PORT_SERIAL_CONTROL1_REG(0)));
214 reg = readl(KWGBE_PORT_SERIAL_CONTROL1_REG(1));
215 reg &= ~(1 << 4); /* Clear PortReset Bit */
216 writel(reg, (KWGBE_PORT_SERIAL_CONTROL1_REG(1)));
218 #ifdef CONFIG_KIRKWOOD_PCIE_INIT
220 * Enable PCI Express Port0
222 reg = readl(&cpureg->ctrl_stat);
223 reg |= (1 << 0); /* Set PEX0En Bit */
224 writel(reg, &cpureg->ctrl_stat);
228 #endif /* CONFIG_ARCH_CPU_INIT */
231 * SOC specific misc init
233 #if defined(CONFIG_ARCH_MISC_INIT)
234 int arch_misc_init(void)
238 /*CPU streaming & write allocate */
239 temp = readfr_extra_feature_reg();
240 temp &= ~(1 << 28); /* disable wr alloc */
241 writefr_extra_feature_reg(temp);
243 temp = readfr_extra_feature_reg();
244 temp &= ~(1 << 29); /* streaming disabled */
245 writefr_extra_feature_reg(temp);
247 /* L2Cache settings */
248 temp = readfr_extra_feature_reg();
249 /* Disable L2C pre fetch - Set bit 24 */
251 /* enable L2C - Set bit 22 */
253 writefr_extra_feature_reg(temp);
255 /* Change reset vector to address 0x0 */
257 set_cr(temp & ~CR_V);
259 /* Configure mbus windows */
260 mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
262 /* checks and execute resset to factory event */
267 #endif /* CONFIG_ARCH_MISC_INIT */
270 int cpu_eth_init(bd_t *bis)
272 mvgbe_initialize(bis);
277 #ifdef CONFIG_MVEBU_MMC
278 int board_mmc_init(bd_t *bis)
283 #endif /* CONFIG_MVEBU_MMC */