1 // SPDX-License-Identifier: GPL-2.0+
8 #include <fdt_support.h>
12 #include <asm/bitops.h>
13 #include <asm/mpc8349_pci.h>
17 #ifdef CONFIG_SYS_FSL_DDR2
18 #include <fsl_ddr_sdram.h>
20 #include <spd_sdram.h>
22 #include <linux/delay.h>
24 #if defined(CONFIG_OF_LIBFDT)
25 #include <linux/libfdt.h>
28 DECLARE_GLOBAL_DATA_PTR;
30 int fixed_sdram(void);
31 void sdram_init(void);
33 #if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx)
34 void ddr_enable_ecc(unsigned int dram_size);
37 int board_early_init_f (void)
39 volatile u8* bcsr = (volatile u8*)CONFIG_SYS_BCSR;
41 /* Enable flash write */
44 #ifdef CONFIG_SYS_USE_MPC834XSYS_USB_PHY
45 /* Use USB PHY on SYS board */
52 #define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)
56 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
57 phys_size_t msize = 0;
59 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
62 /* DDR SDRAM - Main SODIMM */
63 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR;
64 #if defined(CONFIG_SPD_EEPROM)
65 #ifndef CONFIG_SYS_FSL_DDR2
66 msize = spd_sdram() * 1024 * 1024;
67 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
68 ddr_enable_ecc(msize);
71 msize = fsl_ddr_sdram();
74 msize = fixed_sdram() * 1024 * 1024;
77 * Initialize SDRAM if it is on local bus.
81 /* set total bus SDRAM size(bytes) -- DDR */
87 #if !defined(CONFIG_SPD_EEPROM)
88 /*************************************************************************
89 * fixed sdram init -- doesn't use serial presence detect.
90 ************************************************************************/
93 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
94 u32 msize = CONFIG_SYS_DDR_SIZE;
95 u32 ddr_size = msize << 20; /* DDR size in bytes */
96 u32 ddr_size_log2 = __ilog2(ddr_size);
98 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
99 im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
101 #if (CONFIG_SYS_DDR_SIZE != 256)
102 #warning Currenly any ddr size other than 256 is not supported
105 im->ddr.csbnds[2].csbnds = CONFIG_SYS_DDR_CS2_BNDS;
106 im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
107 im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
108 im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
109 im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
110 im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
111 im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
112 im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
113 im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
114 im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
115 im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
116 im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL;
119 #if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0)
120 #warning Chip select bounds is only configurable in 16MB increments
122 im->ddr.csbnds[2].csbnds =
123 ((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
124 (((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >>
125 CSBNDS_EA_SHIFT) & CSBNDS_EA);
126 im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
128 /* currently we use only one CS, so disable the other banks */
129 im->ddr.cs_config[0] = 0;
130 im->ddr.cs_config[1] = 0;
131 im->ddr.cs_config[3] = 0;
133 im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
134 im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
138 #if defined(CONFIG_DDR_2T_TIMING)
141 | 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
142 #if defined (CONFIG_DDR_32BIT)
143 /* for 32-bit mode burst length is 8 */
144 im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);
146 im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
148 im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
152 /* enable DDR controller */
153 im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
156 #endif/*!CONFIG_SYS_SPD_EEPROM*/
159 int checkboard (void)
162 * Warning: do not read the BCSR registers here
164 * There is a timing bug in the 8349E and 8349EA BCSR code
165 * version 1.2 (read from BCSR 11) that will cause the CFI
166 * flash initialization code to overwrite BCSR 0, disabling
167 * the serial ports and gigabit ethernet
170 puts("Board: Freescale MPC8349EMDS\n");
175 * if MPC8349EMDS is soldered with SDRAM
177 #if defined(CONFIG_SYS_BR2_PRELIM) \
178 && defined(CONFIG_SYS_OR2_PRELIM) \
179 && defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \
180 && defined(CONFIG_SYS_LBLAWAR2_PRELIM)
182 * Initialize SDRAM memory on the Local Bus.
185 void sdram_init(void)
187 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
188 volatile fsl_lbc_t *lbc = &immap->im_lbc;
189 uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
190 const u32 lsdmr_common = LSDMR_RFEN | LSDMR_BSMA1516 | LSDMR_RFCR8 |
191 LSDMR_PRETOACT6 | LSDMR_ACTTORW3 | LSDMR_BL8 |
192 LSDMR_WRC3 | LSDMR_CL3;
194 * Setup SDRAM Base and Option Registers, already done in cpu_init.c
197 /* setup mtrpt, lsrt and lbcr for LB bus */
198 lbc->lbcr = 0x00000000;
199 /* LB refresh timer prescal, 266MHz/32 */
200 lbc->mrtpr = 0x20000000;
201 /* LB sdram refresh timer, about 6us */
202 lbc->lsrt = 0x32000000;
206 * Configure the SDRAM controller Machine Mode Register.
209 /* 0x40636733; normal operation */
210 lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
212 /* 0x68636733; precharge all the banks */
213 lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
218 /* 0x48636733; auto refresh */
219 lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
246 /* 0x58636733; mode register write operation */
247 lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
252 /* 0x40636733; normal operation */
253 lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
259 void sdram_init(void)
265 * The following are used to control the SPI chip selects for the SPI command.
267 #ifdef CONFIG_MPC8XXX_SPI
269 #define SPI_CS_MASK 0x80000000
271 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
273 return bus == 0 && cs == 0;
276 void spi_cs_activate(struct spi_slave *slave)
278 volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];
280 iopd->dat &= ~SPI_CS_MASK;
283 void spi_cs_deactivate(struct spi_slave *slave)
285 volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];
287 iopd->dat |= SPI_CS_MASK;
291 #if defined(CONFIG_OF_BOARD_SETUP)
292 int ft_board_setup(void *blob, bd_t *bd)
294 ft_cpu_setup(blob, bd);
296 ft_pci_setup(blob, bd);