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ARM: keystone2: Refactor MSMC macros to avoid #ifdeffery
[u-boot] / arch / arm / mach-keystone / init.c
1 /*
2  * Keystone2: Architecture initialization
3  *
4  * (C) Copyright 2012-2014
5  *     Texas Instruments Incorporated, <www.ti.com>
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9
10 #include <common.h>
11 #include <ns16550.h>
12 #include <asm/io.h>
13 #include <asm/arch/msmc.h>
14 #include <asm/arch/clock.h>
15 #include <asm/arch/hardware.h>
16 #include <asm/arch/psc_defs.h>
17
18 #define MAX_PCI_PORTS           2
19 enum pci_mode   {
20         ENDPOINT,
21         LEGACY_ENDPOINT,
22         ROOTCOMPLEX,
23 };
24
25 #define DEVCFG_MODE_MASK                (BIT(2) | BIT(1))
26 #define DEVCFG_MODE_SHIFT               1
27
28 void chip_configuration_unlock(void)
29 {
30         __raw_writel(KS2_KICK0_MAGIC, KS2_KICK0);
31         __raw_writel(KS2_KICK1_MAGIC, KS2_KICK1);
32 }
33
34 #ifdef CONFIG_SOC_K2L
35 void osr_init(void)
36 {
37         u32 i;
38         u32 j;
39         u32 val;
40         u32 base = KS2_OSR_CFG_BASE;
41         u32 ecc_ctrl[KS2_OSR_NUM_RAM_BANKS];
42
43         /* Enable the OSR clock domain */
44         psc_enable_module(KS2_LPSC_OSR);
45
46         /* Disable OSR ECC check for all the ram banks */
47         for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++) {
48                 val = i | KS2_OSR_ECC_VEC_TRIG_RD |
49                         (KS2_OSR_ECC_CTRL << KS2_OSR_ECC_VEC_RD_ADDR_SH);
50
51                 writel(val , base + KS2_OSR_ECC_VEC);
52
53                 /**
54                  * wait till read is done.
55                  * Print should be added after earlyprintk support is added.
56                  */
57                 for (j = 0; j < 10000; j++) {
58                         val = readl(base + KS2_OSR_ECC_VEC);
59                         if (val & KS2_OSR_ECC_VEC_RD_DONE)
60                                 break;
61                 }
62
63                 ecc_ctrl[i] = readl(base + KS2_OSR_ECC_CTRL) ^
64                                                 KS2_OSR_ECC_CTRL_CHK;
65
66                 writel(ecc_ctrl[i], KS2_MSMC_DATA_BASE + i * 4);
67                 writel(ecc_ctrl[i], base + KS2_OSR_ECC_CTRL);
68         }
69
70         /* Reset OSR memory to all zeros */
71         for (i = 0; i < KS2_OSR_SIZE; i += 4)
72                 writel(0, KS2_OSR_DATA_BASE + i);
73
74         /* Enable OSR ECC check for all the ram banks */
75         for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++)
76                 writel(ecc_ctrl[i] |
77                        KS2_OSR_ECC_CTRL_CHK, base + KS2_OSR_ECC_CTRL);
78 }
79 #endif
80
81 /* Function to set up PCIe mode */
82 static void config_pcie_mode(int pcie_port,  enum pci_mode mode)
83 {
84         u32 val = __raw_readl(KS2_DEVCFG);
85
86         if (pcie_port >= MAX_PCI_PORTS)
87                 return;
88
89         /**
90          * each pci port has two bits for mode and it starts at
91          * bit 1. So use port number to get the right bit position.
92          */
93         pcie_port <<= 1;
94         val &= ~(DEVCFG_MODE_MASK << pcie_port);
95         val |= ((mode << DEVCFG_MODE_SHIFT) << pcie_port);
96         __raw_writel(val, KS2_DEVCFG);
97 }
98
99 static void msmc_k2hkle_common_setup(void)
100 {
101         msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_ARM);
102         msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_NETCP);
103 #ifdef KS2_MSMC_SEGMENT_QM_PDSP
104         msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_QM_PDSP);
105 #endif
106         msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_PCIE0);
107 }
108
109 static inline void msmc_k2l_setup(void)
110 {
111         msmc_share_all_segments(K2L_MSMC_SEGMENT_PCIE1);
112 }
113
114 static inline void msmc_k2e_setup(void)
115 {
116         msmc_share_all_segments(K2E_MSMC_SEGMENT_PCIE1);
117 }
118
119 static inline void msmc_k2g_setup(void)
120 {
121         msmc_share_all_segments(K2G_MSMC_SEGMENT_ARM);
122         msmc_share_all_segments(K2G_MSMC_SEGMENT_NSS);
123         msmc_share_all_segments(K2G_MSMC_SEGMENT_PCIE);
124 }
125
126 int arch_cpu_init(void)
127 {
128         chip_configuration_unlock();
129         icache_enable();
130
131         if (cpu_is_k2g()) {
132                 msmc_k2g_setup();
133         } else {
134                 msmc_k2hkle_common_setup();
135                 if (cpu_is_k2e())
136                         msmc_k2e_setup();
137                 else if (cpu_is_k2l())
138                         msmc_k2l_setup();
139         }
140
141         /* Initialize the PCIe-0 to work as Root Complex */
142         config_pcie_mode(0, ROOTCOMPLEX);
143 #if defined(CONFIG_SOC_K2E) || defined(CONFIG_SOC_K2L)
144         /* Initialize the PCIe-1 to work as Root Complex */
145         config_pcie_mode(1, ROOTCOMPLEX);
146 #endif
147 #ifdef CONFIG_SOC_K2L
148         osr_init();
149 #endif
150
151         /*
152          * just initialise the COM2 port so that TI specific
153          * UART register PWREMU_MGMT is initialized. Linux UART
154          * driver doesn't handle this.
155          */
156 #ifndef CONFIG_DM_SERIAL
157         NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM2),
158                      CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
159 #endif
160
161         return 0;
162 }
163
164 void reset_cpu(ulong addr)
165 {
166         volatile u32 *rstctrl = (volatile u32 *)(KS2_RSTCTRL);
167         u32 tmp;
168
169         tmp = *rstctrl & KS2_RSTCTRL_MASK;
170         *rstctrl = tmp | KS2_RSTCTRL_KEY;
171
172         *rstctrl &= KS2_RSTCTRL_SWRST;
173
174         for (;;)
175                 ;
176 }
177
178 void enable_caches(void)
179 {
180 #ifndef CONFIG_SYS_DCACHE_OFF
181         /* Enable D-cache. I-cache is already enabled in start.S */
182         dcache_enable();
183 #endif
184 }
185
186 #if defined(CONFIG_DISPLAY_CPUINFO)
187 int print_cpuinfo(void)
188 {
189         u16 cpu = get_part_number();
190         u8 rev = cpu_revision();
191
192         puts("CPU: ");
193         switch (cpu) {
194         case CPU_66AK2Hx:
195                 puts("66AK2Hx SR");
196                 break;
197         case CPU_66AK2Lx:
198                 puts("66AK2Lx SR");
199                 break;
200         case CPU_66AK2Ex:
201                 puts("66AK2Ex SR");
202                 break;
203         case CPU_66AK2Gx:
204                 puts("66AK2Gx SR");
205                 break;
206         default:
207                 puts("Unknown\n");
208         }
209
210         if (rev == 2)
211                 puts("2.0\n");
212         else if (rev == 1)
213                 puts("1.1\n");
214         else if (rev == 0)
215                 puts("1.0\n");
216
217         return 0;
218 }
219 #endif