2 * SPL specific code for Compulab CM-FX6 board
4 * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
6 * Author: Nikita Kiryanov <nikita@compulab.co.il>
8 * SPDX-License-Identifier: GPL-2.0+
15 #include <asm/arch/mx6-ddr.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/sys_proto.h>
18 #include <asm/arch/crm_regs.h>
19 #include <asm/imx-common/iomux-v3.h>
20 #include <fsl_esdhc.h>
23 DECLARE_GLOBAL_DATA_PTR
;
36 * Below DRAM_RESET[DDR_SEL] = 0 which is incorrect according to
37 * Freescale QRM, but this is exactly the value used by the automatic
38 * calibration script and it works also in all our tests, so we leave
39 * it as is at this point.
41 #define CM_FX6_DDR_IOMUX_CFG \
42 .dram_sdqs0 = 0x00000038, \
43 .dram_sdqs1 = 0x00000038, \
44 .dram_sdqs2 = 0x00000038, \
45 .dram_sdqs3 = 0x00000038, \
46 .dram_sdqs4 = 0x00000038, \
47 .dram_sdqs5 = 0x00000038, \
48 .dram_sdqs6 = 0x00000038, \
49 .dram_sdqs7 = 0x00000038, \
50 .dram_dqm0 = 0x00000038, \
51 .dram_dqm1 = 0x00000038, \
52 .dram_dqm2 = 0x00000038, \
53 .dram_dqm3 = 0x00000038, \
54 .dram_dqm4 = 0x00000038, \
55 .dram_dqm5 = 0x00000038, \
56 .dram_dqm6 = 0x00000038, \
57 .dram_dqm7 = 0x00000038, \
58 .dram_cas = 0x00000038, \
59 .dram_ras = 0x00000038, \
60 .dram_sdclk_0 = 0x00000038, \
61 .dram_sdclk_1 = 0x00000038, \
62 .dram_sdcke0 = 0x00003000, \
63 .dram_sdcke1 = 0x00003000, \
64 .dram_reset = 0x00000038, \
65 .dram_sdba2 = 0x00000000, \
66 .dram_sdodt0 = 0x00000038, \
67 .dram_sdodt1 = 0x00000038,
69 #define CM_FX6_GPR_IOMUX_CFG \
70 .grp_b0ds = 0x00000038, \
71 .grp_b1ds = 0x00000038, \
72 .grp_b2ds = 0x00000038, \
73 .grp_b3ds = 0x00000038, \
74 .grp_b4ds = 0x00000038, \
75 .grp_b5ds = 0x00000038, \
76 .grp_b6ds = 0x00000038, \
77 .grp_b7ds = 0x00000038, \
78 .grp_addds = 0x00000038, \
79 .grp_ddrmode_ctl = 0x00020000, \
80 .grp_ddrpke = 0x00000000, \
81 .grp_ddrmode = 0x00020000, \
82 .grp_ctlds = 0x00000038, \
83 .grp_ddr_type = 0x000C0000,
85 static struct mx6sdl_iomux_ddr_regs ddr_iomux_s
= { CM_FX6_DDR_IOMUX_CFG
};
86 static struct mx6sdl_iomux_grp_regs grp_iomux_s
= { CM_FX6_GPR_IOMUX_CFG
};
87 static struct mx6dq_iomux_ddr_regs ddr_iomux_q
= { CM_FX6_DDR_IOMUX_CFG
};
88 static struct mx6dq_iomux_grp_regs grp_iomux_q
= { CM_FX6_GPR_IOMUX_CFG
};
90 static struct mx6_mmdc_calibration cm_fx6_calib_s
= {
91 .p0_mpwldectrl0
= 0x005B0061,
92 .p0_mpwldectrl1
= 0x004F0055,
93 .p0_mpdgctrl0
= 0x0314030C,
94 .p0_mpdgctrl1
= 0x025C0268,
95 .p0_mprddlctl
= 0x42464646,
96 .p0_mpwrdlctl
= 0x36322C34,
99 static struct mx6_ddr_sysinfo cm_fx6_sysinfo_s
= {
112 static struct mx6_ddr3_cfg cm_fx6_ddr3_cfg_s
= {
124 static void spl_mx6s_dram_init(enum ddr_config dram_config
, bool reset
)
127 ((struct mmdc_p_regs
*)MX6_MMDC_P0_MDCTL
)->mdmisc
= 2;
129 switch (dram_config
) {
130 case DDR_16BIT_256MB
:
131 cm_fx6_sysinfo_s
.dsize
= 0;
132 cm_fx6_sysinfo_s
.ncs
= 1;
134 case DDR_32BIT_512MB
:
135 cm_fx6_sysinfo_s
.dsize
= 1;
136 cm_fx6_sysinfo_s
.ncs
= 1;
139 cm_fx6_sysinfo_s
.dsize
= 1;
140 cm_fx6_sysinfo_s
.ncs
= 2;
143 puts("Tried to setup invalid DDR configuration\n");
147 mx6_dram_cfg(&cm_fx6_sysinfo_s
, &cm_fx6_calib_s
, &cm_fx6_ddr3_cfg_s
);
151 static struct mx6_mmdc_calibration cm_fx6_calib_q
= {
152 .p0_mpwldectrl0
= 0x00630068,
153 .p0_mpwldectrl1
= 0x0068005D,
154 .p0_mpdgctrl0
= 0x04140428,
155 .p0_mpdgctrl1
= 0x037C037C,
156 .p0_mprddlctl
= 0x3C30303A,
157 .p0_mpwrdlctl
= 0x3A344038,
158 .p1_mpwldectrl0
= 0x0035004C,
159 .p1_mpwldectrl1
= 0x00170026,
160 .p1_mpdgctrl0
= 0x0374037C,
161 .p1_mpdgctrl1
= 0x0350032C,
162 .p1_mprddlctl
= 0x30322A3C,
163 .p1_mpwrdlctl
= 0x48304A3E,
166 static struct mx6_ddr_sysinfo cm_fx6_sysinfo_q
= {
179 static struct mx6_ddr3_cfg cm_fx6_ddr3_cfg_q
= {
191 static void spl_mx6q_dram_init(enum ddr_config dram_config
, bool reset
)
194 ((struct mmdc_p_regs
*)MX6_MMDC_P0_MDCTL
)->mdmisc
= 2;
196 cm_fx6_ddr3_cfg_q
.rowaddr
= 14;
197 switch (dram_config
) {
198 case DDR_16BIT_256MB
:
199 cm_fx6_sysinfo_q
.dsize
= 0;
200 cm_fx6_sysinfo_q
.ncs
= 1;
202 case DDR_32BIT_512MB
:
203 cm_fx6_sysinfo_q
.dsize
= 1;
204 cm_fx6_sysinfo_q
.ncs
= 1;
207 cm_fx6_sysinfo_q
.dsize
= 2;
208 cm_fx6_sysinfo_q
.ncs
= 1;
211 cm_fx6_sysinfo_q
.dsize
= 2;
212 cm_fx6_sysinfo_q
.ncs
= 2;
215 cm_fx6_sysinfo_q
.dsize
= 2;
216 cm_fx6_sysinfo_q
.ncs
= 2;
217 cm_fx6_ddr3_cfg_q
.rowaddr
= 15;
220 puts("Tried to setup invalid DDR configuration\n");
224 mx6_dram_cfg(&cm_fx6_sysinfo_q
, &cm_fx6_calib_q
, &cm_fx6_ddr3_cfg_q
);
228 static int cm_fx6_spl_dram_init(void)
230 unsigned long bank1_size
, bank2_size
;
232 switch (get_cpu_type()) {
233 case MXC_CPU_MX6SOLO
:
234 mx6sdl_dram_iocfg(64, &ddr_iomux_s
, &grp_iomux_s
);
236 spl_mx6s_dram_init(DDR_32BIT_1GB
, false);
237 bank1_size
= get_ram_size((long int *)PHYS_SDRAM_1
, 0x80000000);
238 if (bank1_size
== 0x40000000)
241 if (bank1_size
== 0x20000000) {
242 spl_mx6s_dram_init(DDR_32BIT_512MB
, true);
246 spl_mx6s_dram_init(DDR_16BIT_256MB
, true);
247 bank1_size
= get_ram_size((long int *)PHYS_SDRAM_1
, 0x80000000);
248 if (bank1_size
== 0x10000000)
254 mx6dq_dram_iocfg(64, &ddr_iomux_q
, &grp_iomux_q
);
256 spl_mx6q_dram_init(DDR_64BIT_4GB
, false);
257 bank1_size
= get_ram_size((long int *)PHYS_SDRAM_1
, 0x80000000);
258 if (bank1_size
== 0x80000000)
261 if (bank1_size
== 0x40000000) {
262 bank2_size
= get_ram_size((long int *)PHYS_SDRAM_2
,
264 if (bank2_size
== 0x40000000) {
265 /* Don't do a full reset here */
266 spl_mx6q_dram_init(DDR_64BIT_2GB
, false);
268 spl_mx6q_dram_init(DDR_64BIT_1GB
, true);
274 spl_mx6q_dram_init(DDR_32BIT_512MB
, true);
275 bank1_size
= get_ram_size((long int *)PHYS_SDRAM_1
, 0x80000000);
276 if (bank1_size
== 0x20000000)
279 spl_mx6q_dram_init(DDR_16BIT_256MB
, true);
280 bank1_size
= get_ram_size((long int *)PHYS_SDRAM_1
, 0x80000000);
281 if (bank1_size
== 0x10000000)
290 static iomux_v3_cfg_t
const uart4_pads
[] = {
291 IOMUX_PADS(PAD_KEY_COL0__UART4_TX_DATA
| MUX_PAD_CTRL(UART_PAD_CTRL
)),
292 IOMUX_PADS(PAD_KEY_ROW0__UART4_RX_DATA
| MUX_PAD_CTRL(UART_PAD_CTRL
)),
295 static void cm_fx6_setup_uart(void)
297 SETUP_IOMUX_PADS(uart4_pads
);
301 #ifdef CONFIG_SPL_SPI_SUPPORT
302 static void cm_fx6_setup_ecspi(void)
304 cm_fx6_set_ecspi_iomux();
305 enable_cspi_clock(1, 0);
308 static void cm_fx6_setup_ecspi(void) { }
311 void board_init_f(ulong dummy
)
313 struct mxc_ccm_reg
*mxc_ccm
= (struct mxc_ccm_reg
*)CCM_BASE_ADDR
;
317 * We don't use DMA in SPL, but we do need it in U-Boot. U-Boot
318 * initializes DMA very early (before all board code), so the only
319 * opportunity we have to initialize APBHDMA clocks is in SPL.
321 setbits_le32(&mxc_ccm
->CCGR0
, MXC_CCM_CCGR0_APBHDMA_MASK
);
322 enable_usdhc_clk(1, 2);
326 cm_fx6_setup_ecspi();
329 preloader_console_init();
330 gpio_direction_output(CM_FX6_GREEN_LED
, 1);
331 if (cm_fx6_spl_dram_init()) {
332 puts("!!!ERROR!!! DRAM detection failed!!!\n");
336 memset(__bss_start
, 0, __bss_end
- __bss_start
);
337 board_init_r(NULL
, 0);
340 void spl_board_init(void)
342 u32 boot_device
= spl_boot_device();
344 if (boot_device
== BOOT_DEVICE_SPI
)
345 puts("Booting from SPI flash\n");
346 else if (boot_device
== BOOT_DEVICE_MMC1
)
347 puts("Booting from MMC\n");
349 puts("Unknown boot device\n");
352 #ifdef CONFIG_SPL_MMC_SUPPORT
353 static struct fsl_esdhc_cfg usdhc_cfg
= {
354 .esdhc_base
= USDHC3_BASE_ADDR
,
358 int board_mmc_init(bd_t
*bis
)
360 cm_fx6_set_usdhc_iomux();
362 usdhc_cfg
.sdhc_clk
= mxc_get_clock(MXC_ESDHC3_CLK
);
364 return fsl_esdhc_initialize(bis
, &usdhc_cfg
);