Merge branch 'master' of git://git.denx.de/u-boot-usb
[oweals/u-boot.git] / arch / arm / cpu / armv8 / fsl-layerscape / soc.c
1 /*
2  * Copyright 2014-2015 Freescale Semiconductor
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <fsl_ifc.h>
9 #include <ahci.h>
10 #include <scsi.h>
11 #include <asm/arch/soc.h>
12 #include <asm/io.h>
13 #include <asm/global_data.h>
14 #include <asm/arch-fsl-layerscape/config.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 #if defined(CONFIG_LS2080A) || defined(CONFIG_LS2085A)
19 /*
20  * This erratum requires setting a value to eddrtqcr1 to
21  * optimal the DDR performance.
22  */
23 static void erratum_a008336(void)
24 {
25         u32 *eddrtqcr1;
26
27 #ifdef CONFIG_SYS_FSL_ERRATUM_A008336
28 #ifdef CONFIG_SYS_FSL_DCSR_DDR_ADDR
29         eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR_ADDR + 0x800;
30         out_le32(eddrtqcr1, 0x63b30002);
31 #endif
32 #ifdef CONFIG_SYS_FSL_DCSR_DDR2_ADDR
33         eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR2_ADDR + 0x800;
34         out_le32(eddrtqcr1, 0x63b30002);
35 #endif
36 #endif
37 }
38
39 /*
40  * This erratum requires a register write before being Memory
41  * controller 3 being enabled.
42  */
43 static void erratum_a008514(void)
44 {
45         u32 *eddrtqcr1;
46
47 #ifdef CONFIG_SYS_FSL_ERRATUM_A008514
48 #ifdef CONFIG_SYS_FSL_DCSR_DDR3_ADDR
49         eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR3_ADDR + 0x800;
50         out_le32(eddrtqcr1, 0x63b20002);
51 #endif
52 #endif
53 }
54 #ifdef CONFIG_SYS_FSL_ERRATUM_A009635
55 #define PLATFORM_CYCLE_ENV_VAR  "a009635_interval_val"
56
57 static unsigned long get_internval_val_mhz(void)
58 {
59         char *interval = getenv(PLATFORM_CYCLE_ENV_VAR);
60         /*
61          *  interval is the number of platform cycles(MHz) between
62          *  wake up events generated by EPU.
63          */
64         ulong interval_mhz = get_bus_freq(0) / (1000 * 1000);
65
66         if (interval)
67                 interval_mhz = simple_strtoul(interval, NULL, 10);
68
69         return interval_mhz;
70 }
71
72 void erratum_a009635(void)
73 {
74         u32 val;
75         unsigned long interval_mhz = get_internval_val_mhz();
76
77         if (!interval_mhz)
78                 return;
79
80         val = in_le32(DCSR_CGACRE5);
81         writel(val | 0x00000200, DCSR_CGACRE5);
82
83         val = in_le32(EPU_EPCMPR5);
84         writel(interval_mhz, EPU_EPCMPR5);
85         val = in_le32(EPU_EPCCR5);
86         writel(val | 0x82820000, EPU_EPCCR5);
87         val = in_le32(EPU_EPSMCR5);
88         writel(val | 0x002f0000, EPU_EPSMCR5);
89         val = in_le32(EPU_EPECR5);
90         writel(val | 0x20000000, EPU_EPECR5);
91         val = in_le32(EPU_EPGCR);
92         writel(val | 0x80000000, EPU_EPGCR);
93 }
94 #endif  /* CONFIG_SYS_FSL_ERRATUM_A009635 */
95
96 static void erratum_a008751(void)
97 {
98 #ifdef CONFIG_SYS_FSL_ERRATUM_A008751
99         u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
100
101         writel(0x27672b2a, scfg + SCFG_USB3PRM1CR / 4);
102 #endif
103 }
104
105 static void erratum_rcw_src(void)
106 {
107 #if defined(CONFIG_SPL)
108         u32 __iomem *dcfg_ccsr = (u32 __iomem *)DCFG_BASE;
109         u32 __iomem *dcfg_dcsr = (u32 __iomem *)DCFG_DCSR_BASE;
110         u32 val;
111
112         val = in_le32(dcfg_ccsr + DCFG_PORSR1 / 4);
113         val &= ~DCFG_PORSR1_RCW_SRC;
114         val |= DCFG_PORSR1_RCW_SRC_NOR;
115         out_le32(dcfg_dcsr + DCFG_DCSR_PORCR1 / 4, val);
116 #endif
117 }
118
119 #define I2C_DEBUG_REG 0x6
120 #define I2C_GLITCH_EN 0x8
121 /*
122  * This erratum requires setting glitch_en bit to enable
123  * digital glitch filter to improve clock stability.
124  */
125 static void erratum_a009203(void)
126 {
127         u8 __iomem *ptr;
128 #ifdef CONFIG_SYS_I2C
129 #ifdef I2C1_BASE_ADDR
130         ptr = (u8 __iomem *)(I2C1_BASE_ADDR + I2C_DEBUG_REG);
131
132         writeb(I2C_GLITCH_EN, ptr);
133 #endif
134 #ifdef I2C2_BASE_ADDR
135         ptr = (u8 __iomem *)(I2C2_BASE_ADDR + I2C_DEBUG_REG);
136
137         writeb(I2C_GLITCH_EN, ptr);
138 #endif
139 #ifdef I2C3_BASE_ADDR
140         ptr = (u8 __iomem *)(I2C3_BASE_ADDR + I2C_DEBUG_REG);
141
142         writeb(I2C_GLITCH_EN, ptr);
143 #endif
144 #ifdef I2C4_BASE_ADDR
145         ptr = (u8 __iomem *)(I2C4_BASE_ADDR + I2C_DEBUG_REG);
146
147         writeb(I2C_GLITCH_EN, ptr);
148 #endif
149 #endif
150 }
151
152 void fsl_lsch3_early_init_f(void)
153 {
154         erratum_a008751();
155         erratum_rcw_src();
156         init_early_memctl_regs();       /* tighten IFC timing */
157         erratum_a009203();
158         erratum_a008514();
159         erratum_a008336();
160 }
161
162 #ifdef CONFIG_SCSI_AHCI_PLAT
163 int sata_init(void)
164 {
165         struct ccsr_ahci __iomem *ccsr_ahci;
166
167         ccsr_ahci  = (void *)CONFIG_SYS_SATA2;
168         out_le32(&ccsr_ahci->ppcfg, AHCI_PORT_PHY_1_CFG);
169         out_le32(&ccsr_ahci->ptc, AHCI_PORT_TRANS_CFG);
170
171         ccsr_ahci  = (void *)CONFIG_SYS_SATA1;
172         out_le32(&ccsr_ahci->ppcfg, AHCI_PORT_PHY_1_CFG);
173         out_le32(&ccsr_ahci->ptc, AHCI_PORT_TRANS_CFG);
174
175         ahci_init((void __iomem *)CONFIG_SYS_SATA1);
176         scsi_scan(0);
177
178         return 0;
179 }
180 #endif
181
182 #elif defined(CONFIG_LS1043A)
183 #ifdef CONFIG_SCSI_AHCI_PLAT
184 int sata_init(void)
185 {
186         struct ccsr_ahci __iomem *ccsr_ahci = (void *)CONFIG_SYS_SATA;
187
188         out_le32(&ccsr_ahci->ppcfg, AHCI_PORT_PHY_1_CFG);
189         out_le32(&ccsr_ahci->pp2c, AHCI_PORT_PHY_2_CFG);
190         out_le32(&ccsr_ahci->pp3c, AHCI_PORT_PHY_3_CFG);
191         out_le32(&ccsr_ahci->ptc, AHCI_PORT_TRANS_CFG);
192
193         ahci_init((void __iomem *)CONFIG_SYS_SATA);
194         scsi_scan(0);
195
196         return 0;
197 }
198 #endif
199
200 static void erratum_a009929(void)
201 {
202 #ifdef CONFIG_SYS_FSL_ERRATUM_A009929
203         struct ccsr_gur *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
204         u32 __iomem *dcsr_cop_ccp = (void *)CONFIG_SYS_DCSR_COP_CCP_ADDR;
205         u32 rstrqmr1 = gur_in32(&gur->rstrqmr1);
206
207         rstrqmr1 |= 0x00000400;
208         gur_out32(&gur->rstrqmr1, rstrqmr1);
209         writel(0x01000000, dcsr_cop_ccp);
210 #endif
211 }
212
213 void fsl_lsch2_early_init_f(void)
214 {
215         struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
216         struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
217
218 #ifdef CONFIG_FSL_IFC
219         init_early_memctl_regs();       /* tighten IFC timing */
220 #endif
221
222         /* Make SEC reads and writes snoopable */
223         setbits_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SECRDSNP |
224                      SCFG_SNPCNFGCR_SECWRSNP);
225
226         /*
227          * Enable snoop requests and DVM message requests for
228          * Slave insterface S4 (A53 core cluster)
229          */
230         out_le32(&cci->slave[4].snoop_ctrl,
231                  CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN);
232
233         /* Erratum */
234         erratum_a009929();
235 }
236 #endif
237
238 #ifdef CONFIG_BOARD_LATE_INIT
239 int board_late_init(void)
240 {
241 #ifdef CONFIG_SCSI_AHCI_PLAT
242         sata_init();
243 #endif
244
245         return 0;
246 }
247 #endif