board/samsung/goni/lowlevel_init.S

   1 /*
   2  * Memory Setup stuff - taken from blob memsetup.S
   3  *
   4  * Copyright (C) 2009 Samsung Electronics
   5  * Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <config.h>
  11 #include <asm/arch/cpu.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/power.h>
  14
  15 /*
  16  * Register usages:
  17  *
  18  * r5 has zero always
  19  * r7 has S5PC100 GPIO base, 0xE0300000
  20  * r8 has real GPIO base, 0xE0300000, 0xE0200000 at S5PC100, S5PC110 repectively
  21  * r9 has Mobile DDR size, 1 means 1GiB, 2 means 2GiB and so on
  22  */
  23
  24         .globl lowlevel_init
  25 lowlevel_init:
  26         mov     r11, lr
  27
  28         /* r5 has always zero */
  29         mov     r5, #0
  30
  31         ldr     r7, =S5PC100_GPIO_BASE
  32         ldr     r8, =S5PC100_GPIO_BASE
  33         /* Read CPU ID */
  34         ldr     r2, =S5PC110_PRO_ID
  35         ldr     r0, [r2]
  36         mov     r1, #0x00010000
  37         and     r0, r0, r1
  38         cmp     r0, r5
  39         beq     100f
  40         ldr     r8, =S5PC110_GPIO_BASE
  41 100:
  42         /* Turn on KEY_LED_ON [GPJ4(1)] XMSMWEN */
  43         cmp     r7, r8
  44         beq     skip_check_didle                        @ Support C110 only
  45
  46         ldr     r0, =S5PC110_RST_STAT
  47         ldr     r1, [r0]
  48         and     r1, r1, #0x000D0000
  49         cmp     r1, #(0x1 << 19)                        @ DEEPIDLE_WAKEUP
  50         beq     didle_wakeup
  51         cmp     r7, r8
  52
  53 skip_check_didle:
  54         addeq   r0, r8, #0x280                          @ S5PC100_GPIO_J4
  55         addne   r0, r8, #0x2C0                          @ S5PC110_GPIO_J4
  56         ldr     r1, [r0, #0x0]                          @ GPIO_CON_OFFSET
  57         bic     r1, r1, #(0xf << 4)                     @ 1 * 4-bit
  58         orr     r1, r1, #(0x1 << 4)
  59         str     r1, [r0, #0x0]                          @ GPIO_CON_OFFSET
  60
  61         ldr     r1, [r0, #0x4]                          @ GPIO_DAT_OFFSET
  62         bic     r1, r1, #(1 << 1)
  63         str     r1, [r0, #0x4]                          @ GPIO_DAT_OFFSET
  64
  65         /* Don't setup at s5pc100 */
  66         beq     100f
  67
  68         /*
  69          * Initialize Async Register Setting for EVT1
  70          * Because we are setting EVT1 as the default value of EVT0,
  71          * setting EVT0 as well does not make things worse.
  72          * Thus, for the simplicity, we set for EVT0, too
  73          *
  74          * The "Async Registers" are:
  75          *      0xE0F0_0000
  76          *      0xE1F0_0000
  77          *      0xF180_0000
  78          *      0xF190_0000
  79          *      0xF1A0_0000
  80          *      0xF1B0_0000
  81          *      0xF1C0_0000
  82          *      0xF1D0_0000
  83          *      0xF1E0_0000
  84          *      0xF1F0_0000
  85          *      0xFAF0_0000
  86          */
  87         ldr     r0, =0xe0f00000
  88         ldr     r1, [r0]
  89         bic     r1, r1, #0x1
  90         str     r1, [r0]
  91
  92         ldr     r0, =0xe1f00000
  93         ldr     r1, [r0]
  94         bic     r1, r1, #0x1
  95         str     r1, [r0]
  96
  97         ldr     r0, =0xf1800000
  98         ldr     r1, [r0]
  99         bic     r1, r1, #0x1
 100         str     r1, [r0]
 101
 102         ldr     r0, =0xf1900000
 103         ldr     r1, [r0]
 104         bic     r1, r1, #0x1
 105         str     r1, [r0]
 106
 107         ldr     r0, =0xf1a00000
 108         ldr     r1, [r0]
 109         bic     r1, r1, #0x1
 110         str     r1, [r0]
 111
 112         ldr     r0, =0xf1b00000
 113         ldr     r1, [r0]
 114         bic     r1, r1, #0x1
 115         str     r1, [r0]
 116
 117         ldr     r0, =0xf1c00000
 118         ldr     r1, [r0]
 119         bic     r1, r1, #0x1
 120         str     r1, [r0]
 121
 122         ldr     r0, =0xf1d00000
 123         ldr     r1, [r0]
 124         bic     r1, r1, #0x1
 125         str     r1, [r0]
 126
 127         ldr     r0, =0xf1e00000
 128         ldr     r1, [r0]
 129         bic     r1, r1, #0x1
 130         str     r1, [r0]
 131
 132         ldr     r0, =0xf1f00000
 133         ldr     r1, [r0]
 134         bic     r1, r1, #0x1
 135         str     r1, [r0]
 136
 137         ldr     r0, =0xfaf00000
 138         ldr     r1, [r0]
 139         bic     r1, r1, #0x1
 140         str     r1, [r0]
 141
 142         /*
 143          * Diable ABB block to reduce sleep current at low temperature
 144          * Note that it's hidden register setup don't modify it
 145          */
 146         ldr     r0, =0xE010C300
 147         ldr     r1, =0x00800000
 148         str     r1, [r0]
 149
 150 100:
 151         /* IO retension release */
 152         ldreq   r0, =S5PC100_OTHERS                     @ 0xE0108200
 153         ldrne   r0, =S5PC110_OTHERS                     @ 0xE010E000
 154         ldr     r1, [r0]
 155         ldreq   r2, =(1 << 31)                          @ IO_RET_REL
 156         ldrne   r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28))
 157         orr     r1, r1, r2
 158         /* Do not release retention here for S5PC110 */
 159         streq   r1, [r0]
 160
 161         /* Disable Watchdog */
 162         ldreq   r0, =S5PC100_WATCHDOG_BASE              @ 0xEA200000
 163         ldrne   r0, =S5PC110_WATCHDOG_BASE              @ 0xE2700000
 164         str     r5, [r0]
 165
 166         /* setting SRAM */
 167         ldreq   r0, =S5PC100_SROMC_BASE
 168         ldrne   r0, =S5PC110_SROMC_BASE
 169         ldr     r1, =0x9
 170         str     r1, [r0]
 171
 172         /* S5PC100 has 3 groups of interrupt sources */
 173         ldreq   r0, =S5PC100_VIC0_BASE                  @ 0xE4000000
 174         ldrne   r0, =S5PC110_VIC0_BASE                  @ 0xF2000000
 175         add     r1, r0, #0x00100000
 176         add     r2, r0, #0x00200000
 177
 178         /* Disable all interrupts (VIC0, VIC1 and VIC2) */
 179         mvn     r3, #0x0
 180         str     r3, [r0, #0x14]                         @ INTENCLEAR
 181         str     r3, [r1, #0x14]                         @ INTENCLEAR
 182         str     r3, [r2, #0x14]                         @ INTENCLEAR
 183
 184         /* Set all interrupts as IRQ */
 185         str     r5, [r0, #0xc]                          @ INTSELECT
 186         str     r5, [r1, #0xc]                          @ INTSELECT
 187         str     r5, [r2, #0xc]                          @ INTSELECT
 188
 189         /* Pending Interrupt Clear */
 190         str     r5, [r0, #0xf00]                        @ INTADDRESS
 191         str     r5, [r1, #0xf00]                        @ INTADDRESS
 192         str     r5, [r2, #0xf00]                        @ INTADDRESS
 193
 194         /* for UART */
 195         bl      uart_asm_init
 196
 197         bl      internal_ram_init
 198
 199         cmp     r7, r8
 200         /* Clear wakeup status register */
 201         ldreq   r0, =S5PC100_WAKEUP_STAT
 202         ldrne   r0, =S5PC110_WAKEUP_STAT
 203         ldr     r1, [r0]
 204         str     r1, [r0]
 205
 206         /* IO retension release */
 207         ldreq   r0, =S5PC100_OTHERS                     @ 0xE0108200
 208         ldrne   r0, =S5PC110_OTHERS                     @ 0xE010E000
 209         ldr     r1, [r0]
 210         ldreq   r2, =(1 << 31)                          @ IO_RET_REL
 211         ldrne   r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28))
 212         orr     r1, r1, r2
 213         str     r1, [r0]
 214
 215         b       1f
 216
 217 didle_wakeup:
 218         /* Wait when APLL is locked */
 219         ldr     r0, =0xE0100100                 @ S5PC110_APLL_CON
 220 lockloop:
 221         ldr     r1, [r0]
 222         and     r1, r1, #(1 << 29)
 223         cmp     r1, #(1 << 29)
 224         bne     lockloop
 225
 226         ldr     r0, =S5PC110_INFORM0
 227         ldr     r1, [r0]
 228         mov     pc, r1
 229         nop
 230         nop
 231         nop
 232         nop
 233         nop
 234
 235 1:
 236         mov     lr, r11
 237         mov     pc, lr
 238
 239 /*
 240  * system_clock_init: Initialize core clock and bus clock.
 241  * void system_clock_init(void)
 242  */
 243 system_clock_init:
 244         ldr     r0, =S5PC110_CLOCK_BASE         @ 0xE0100000
 245
 246         /* Check S5PC100 */
 247         cmp     r7, r8
 248         bne     110f
 249 100:
 250         /* Set Lock Time */
 251         ldr     r1, =0xe10                      @ Locktime : 0xe10 = 3600
 252         str     r1, [r0, #0x000]                @ S5PC100_APLL_LOCK
 253         str     r1, [r0, #0x004]                @ S5PC100_MPLL_LOCK
 254         str     r1, [r0, #0x008]                @ S5PC100_EPLL_LOCK
 255         str     r1, [r0, #0x00C]                @ S5PC100_HPLL_LOCK
 256
 257         /* S5P_APLL_CON */
 258         ldr     r1, =0x81bc0400         @ SDIV 0, PDIV 4, MDIV 444 (1333MHz)
 259         str     r1, [r0, #0x100]
 260         /* S5P_MPLL_CON */
 261         ldr     r1, =0x80590201         @ SDIV 1, PDIV 2, MDIV 89 (267MHz)
 262         str     r1, [r0, #0x104]
 263         /* S5P_EPLL_CON */
 264         ldr     r1, =0x80870303         @ SDIV 3, PDIV 3, MDIV 135 (67.5MHz)
 265         str     r1, [r0, #0x108]
 266         /* S5P_HPLL_CON */
 267         ldr     r1, =0x80600603         @ SDIV 3, PDIV 6, MDIV 96
 268         str     r1, [r0, #0x10C]
 269
 270         ldr     r1, [r0, #0x300]
 271         ldr     r2, =0x00003fff
 272         bic     r1, r1, r2
 273         ldr     r2, =0x00011301
 274
 275         orr     r1, r1, r2
 276         str     r1, [r0, #0x300]
 277         ldr     r1, [r0, #0x304]
 278         ldr     r2, =0x00011110
 279         orr     r1, r1, r2
 280         str     r1, [r0, #0x304]
 281         ldr     r1, =0x00000001
 282         str     r1, [r0, #0x308]
 283
 284         /* Set Source Clock */
 285         ldr     r1, =0x00001111                 @ A, M, E, HPLL Muxing
 286         str     r1, [r0, #0x200]                @ S5PC1XX_CLK_SRC0
 287
 288         b       200f
 289 110:
 290         ldr     r0, =0xE010C000                 @ S5PC110_PWR_CFG
 291
 292         /* Set OSC_FREQ value */
 293         ldr     r1, =0xf
 294         str     r1, [r0, #0x100]                @ S5PC110_OSC_FREQ
 295
 296         /* Set MTC_STABLE value */
 297         ldr     r1, =0xffffffff
 298         str     r1, [r0, #0x110]                @ S5PC110_MTC_STABLE
 299
 300         /* Set CLAMP_STABLE value */
 301         ldr     r1, =0x3ff03ff
 302         str     r1, [r0, #0x114]                @ S5PC110_CLAMP_STABLE
 303
 304         ldr     r0, =S5PC110_CLOCK_BASE         @ 0xE0100000
 305
 306         /* Set Clock divider */
 307         ldr     r1, =0x14131330                 @ 1:1:4:4, 1:4:5
 308         str     r1, [r0, #0x300]
 309         ldr     r1, =0x11110111                 @ UART[3210]: MMC[3210]
 310         str     r1, [r0, #0x310]
 311
 312         /* Set Lock Time */
 313         ldr     r1, =0x2cf                      @ Locktime : 30us
 314         str     r1, [r0, #0x000]                @ S5PC110_APLL_LOCK
 315         ldr     r1, =0xe10                      @ Locktime : 0xe10 = 3600
 316         str     r1, [r0, #0x008]                @ S5PC110_MPLL_LOCK
 317         str     r1, [r0, #0x010]                @ S5PC110_EPLL_LOCK
 318         str     r1, [r0, #0x020]                @ S5PC110_VPLL_LOCK
 319
 320         /* S5PC110_APLL_CON */
 321         ldr     r1, =0x80C80601                 @ 800MHz
 322         str     r1, [r0, #0x100]
 323         /* S5PC110_MPLL_CON */
 324         ldr     r1, =0x829B0C01                 @ 667MHz
 325         str     r1, [r0, #0x108]
 326         /* S5PC110_EPLL_CON */
 327         ldr     r1, =0x80600602                 @  96MHz VSEL 0 P 6 M 96 S 2
 328         str     r1, [r0, #0x110]
 329         /* S5PC110_VPLL_CON */
 330         ldr     r1, =0x806C0603                 @  54MHz
 331         str     r1, [r0, #0x120]
 332
 333         /* Set Source Clock */
 334         ldr     r1, =0x10001111                 @ A, M, E, VPLL Muxing
 335         str     r1, [r0, #0x200]                @ S5PC1XX_CLK_SRC0
 336
 337         /* OneDRAM(DMC0) clock setting */
 338         ldr     r1, =0x01000000                 @ ONEDRAM_SEL[25:24] 1 SCLKMPLL
 339         str     r1, [r0, #0x218]                @ S5PC110_CLK_SRC6
 340         ldr     r1, =0x30000000                 @ ONEDRAM_RATIO[31:28] 3 + 1
 341         str     r1, [r0, #0x318]                @ S5PC110_CLK_DIV6
 342
 343         /* XCLKOUT = XUSBXTI 24MHz */
 344         add     r2, r0, #0xE000                 @ S5PC110_OTHERS
 345         ldr     r1, [r2]
 346         orr     r1, r1, #(0x3 << 8)             @ CLKOUT[9:8] 3 XUSBXTI
 347         str     r1, [r2]
 348
 349         /* CLK_IP0 */
 350         ldr     r1, =0x8fefeeb                  @ DMC[1:0] PDMA0[3] IMEM[5]
 351         str     r1, [r0, #0x460]                @ S5PC110_CLK_IP0
 352
 353         /* CLK_IP1 */
 354         ldr     r1, =0xe9fdf0f9                 @ FIMD[0] USBOTG[16]
 355                                                 @ NANDXL[24]
 356         str     r1, [r0, #0x464]                @ S5PC110_CLK_IP1
 357
 358         /* CLK_IP2 */
 359         ldr     r1, =0xf75f7fc                  @ CORESIGHT[8] MODEM[9]
 360                                                 @ HOSTIF[10] HSMMC0[16]
 361                                                 @ HSMMC2[18] VIC[27:24]
 362         str     r1, [r0, #0x468]                @ S5PC110_CLK_IP2
 363
 364         /* CLK_IP3 */
 365         ldr     r1, =0x8eff038c                 @ I2C[8:6]
 366                                                 @ SYSTIMER[16] UART0[17]
 367                                                 @ UART1[18] UART2[19]
 368                                                 @ UART3[20] WDT[22]
 369                                                 @ PWM[23] GPIO[26] SYSCON[27]
 370         str     r1, [r0, #0x46c]                @ S5PC110_CLK_IP3
 371
 372         /* CLK_IP4 */
 373         ldr     r1, =0xfffffff1                 @ CHIP_ID[0] TZPC[8:5]
 374         str     r1, [r0, #0x470]                @ S5PC110_CLK_IP3
 375
 376 200:
 377         /* wait at least 200us to stablize all clock */
 378         mov     r2, #0x10000
 379 1:      subs    r2, r2, #1
 380         bne     1b
 381
 382         mov     pc, lr
 383
 384 internal_ram_init:
 385         ldreq   r0, =0xE3800000
 386         ldrne   r0, =0xF1500000
 387         ldr     r1, =0x0
 388         str     r1, [r0]
 389
 390         mov     pc, lr
 391
 392 /*
 393  * uart_asm_init: Initialize UART's pins
 394  */
 395 uart_asm_init:
 396         /* set GPIO to enable UART0-UART4 */
 397         mov     r0, r8
 398         ldr     r1, =0x22222222
 399         str     r1, [r0, #0x0]                  @ S5PC100_GPIO_A0_OFFSET
 400         ldr     r1, =0x00002222
 401         str     r1, [r0, #0x20]                 @ S5PC100_GPIO_A1_OFFSET
 402
 403         /* Check S5PC100 */
 404         cmp     r7, r8
 405         bne     110f
 406
 407         /* UART_SEL GPK0[5] at S5PC100 */
 408         add     r0, r8, #0x2A0                  @ S5PC100_GPIO_K0_OFFSET
 409         ldr     r1, [r0, #0x0]                  @ S5PC1XX_GPIO_CON_OFFSET
 410         bic     r1, r1, #(0xf << 20)            @ 20 = 5 * 4-bit
 411         orr     r1, r1, #(0x1 << 20)            @ Output
 412         str     r1, [r0, #0x0]                  @ S5PC1XX_GPIO_CON_OFFSET
 413
 414         ldr     r1, [r0, #0x8]                  @ S5PC1XX_GPIO_PULL_OFFSET
 415         bic     r1, r1, #(0x3 << 10)            @ 10 = 5 * 2-bit
 416         orr     r1, r1, #(0x2 << 10)            @ Pull-up enabled
 417         str     r1, [r0, #0x8]                  @ S5PC1XX_GPIO_PULL_OFFSET
 418
 419         ldr     r1, [r0, #0x4]                  @ S5PC1XX_GPIO_DAT_OFFSET
 420         orr     r1, r1, #(1 << 5)               @ 5 = 5 * 1-bit
 421         str     r1, [r0, #0x4]                  @ S5PC1XX_GPIO_DAT_OFFSET
 422
 423         b       200f
 424 110:
 425         /*
 426          * Note that the following address
 427          * 0xE020'0360 is reserved address at S5PC100
 428          */
 429         /* UART_SEL MP0_5[7] at S5PC110 */
 430         add     r0, r8, #0x360                  @ S5PC110_GPIO_MP0_5_OFFSET
 431         ldr     r1, [r0, #0x0]                  @ S5PC1XX_GPIO_CON_OFFSET
 432         bic     r1, r1, #(0xf << 28)            @ 28 = 7 * 4-bit
 433         orr     r1, r1, #(0x1 << 28)            @ Output
 434         str     r1, [r0, #0x0]                  @ S5PC1XX_GPIO_CON_OFFSET
 435
 436         ldr     r1, [r0, #0x8]                  @ S5PC1XX_GPIO_PULL_OFFSET
 437         bic     r1, r1, #(0x3 << 14)            @ 14 = 7 * 2-bit
 438         orr     r1, r1, #(0x2 << 14)            @ Pull-up enabled
 439         str     r1, [r0, #0x8]                  @ S5PC1XX_GPIO_PULL_OFFSET
 440
 441         ldr     r1, [r0, #0x4]                  @ S5PC1XX_GPIO_DAT_OFFSET
 442         orr     r1, r1, #(1 << 7)               @ 7 = 7 * 1-bit
 443         str     r1, [r0, #0x4]                  @ S5PC1XX_GPIO_DAT_OFFSET
 444 200:
 445         mov     pc, lr