X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=board%2Famcc%2Facadia%2Fmemory.c;h=5375d36c9b580d1d5b757692a8b1a67aa02dbf52;hb=51d8e813222fa3063d423220f6ff1146df58a471;hp=a1b015519a7f12be718f895aa5c894c0ba862eea;hpb=c8f228016202aff5ff09cdeeabe8cffd8d898510;p=u-boot diff --git a/board/amcc/acadia/memory.c b/board/amcc/acadia/memory.c index a1b015519a..5375d36c9b 100644 --- a/board/amcc/acadia/memory.c +++ b/board/amcc/acadia/memory.c @@ -21,529 +21,80 @@ * MA 02111-1307 USA */ +/* define DEBUG for debugging output (obviously ;-)) */ +#if 0 +#define DEBUG +#endif + #include #include +#include +#include -#define CRAM_BANK0_BASE 0x0 -#define CRAM_DIDR 0x00100000 -#define MICRON_MT45W8MW16BGX_CRAM_ID 0x1b431b43 -#define MICRON_MT45W8MW16BGX_CRAM_ID2 0x13431343 -#define MICRON_DIDR_VENDOR_ID 0x00030003 /* 00011b */ -#define CRAM_DIDR_VENDOR_ID_MASK 0x001f001f /* DIDR[4:0] */ -#define CRAM_DEVID_NOT_SUPPORTED 0x00000000 - -#define PSRAM_PASS 0x50415353 /* "PASS" */ -#define PSRAM_FAIL 0x4641494C /* "FAIL" */ - -static u32 is_cram_inited(void); -static u32 is_cram(void); -static long int cram_init(u32); -static void cram_bcr_write(u32); -void udelay (unsigned long); - +/* + * sdram_init - Dummy implementation for start.S, spd_sdram used on this board! + */ void sdram_init(void) { - volatile unsigned long spr_reg; - - /* - * If CRAM not initialized or CRAM looks initialized because this - * is after a warm reboot then set SPRG7 to indicate CRAM needs - * initialization. Note that CRAM is initialized by the SPI and - * NAND preloader. - */ - spr_reg = (volatile unsigned long) mfspr(SPRG6); - if ((is_cram_inited() != 1) || (spr_reg != LOAK_SPL)) { - mtspr(SPRG7, LOAK_NONE); /* "NONE" */ - } -#if 1 - /* - * When running the NAND SPL, the normal EBC configuration is not - * done, so We need to enable EPLD access on EBC_CS_2 and the memory - * on EBC_CS_3 - */ - - /* Enable CPLD - Needed for PSRAM Access */ - - - /* Init SDRAM by setting EBC Bank 3 for PSRAM */ - mtebc(pb1ap, CFG_EBC_PB1AP); - mtebc(pb1cr, CFG_EBC_PB1CR); - - mtebc(pb2ap, CFG_EBC_PB2AP); - mtebc(pb2cr, CFG_EBC_PB2CR); - - /* pre-boot loader code: we are in OCM */ - mtspr(SPRG6, LOAK_SPL); /* "SPL " */ - mtspr(SPRG7, LOAK_OCM); /* "OCM " */ -#endif return; } static void cram_bcr_write(u32 wr_val) { - u32 tmp_reg; - u32 val; - volatile u32 gpio_reg; - - /* # Program CRAM write */ - - /* - * set CRAM_CRE = 0x1 - * set wr_val = wr_val << 2 - */ - gpio_reg = in32(GPIO1_OR); - out32(GPIO1_OR, gpio_reg | 0x00000400); - wr_val = wr_val << 2; - /* wr_val = 0x1c048; */ + wr_val <<= 2; - /* - * # stop PLL clock before programming CRAM - * set EPLD0_MUX_CTL.OESPR3 = 1 - * delay 2 - */ + /* set CRAM_CRE to 1 */ + gpio_write_bit(CFG_GPIO_CRAM_CRE, 1); - /* - * # CS1 - * read 0x00200000 - * #shift 2 bit left before write - * set val = wr_val + 0x00200000 - * write dmem val 0 - * read 0x00200000 val - * print val/8x - */ - tmp_reg = in32(0x00200000); - val = wr_val + 0x00200000; - /* val = 0x0021c048; */ - out32(val, 0x0000); - udelay(100000); - val = in32(0x00200000); + /* Write BCR to CRAM on CS1 */ + out32(wr_val + 0x00200000, 0); + debug("CRAM VAL: %08x for CS1 ", wr_val + 0x00200000); - debug("CRAM VAL: %x for CS1 ", val); + /* Write BCR to CRAM on CS2 */ + out32(wr_val + 0x02200000, 0); + debug("CRAM VAL: %08x for CS2\n", wr_val + 0x02200000); - /* - * # CS2 - * read 0x02200000 - * #shift 2 bit left before write - * set val = wr_val + 0x02200000 - * write dmem val 0 - * read 0x02200000 val - * print val/8x - */ - tmp_reg = in32(0x02200000); - val = wr_val + 0x02200000; - /* val = 0x0221c048; */ - out32(val, 0x0000); - udelay(100000); - val = in32(0x02200000); + sync(); + eieio(); - debug("CRAM VAL: %x for CS2 ", val); + /* set CRAM_CRE back to 0 (normal operation) */ + gpio_write_bit(CFG_GPIO_CRAM_CRE, 0); - /* - * # Start PLL clock before programming CRAM - * set EPLD0_MUX_CTL.OESPR3 = 0 - */ - - /* - * set CRAMCR = 0x1 - */ - gpio_reg = in32(GPIO1_OR); - out32(GPIO1_OR, gpio_reg | 0x00000400); - - /* - * # read CRAM config BCR ( bit19:18 = 10b ) - * #read 0x00200000 - * # 1001_1001_0001_1111 ( 991f ) => - * #10_0110_0100_0111_1100 => 2647c => 0022647c - * #0011_0010_0011_1110 (323e) - * # - */ - - /* - * set EPLD0_MUX_CTL.CRAMCR = 0x0 - */ - gpio_reg = in32(GPIO1_OR); - out32(GPIO1_OR, gpio_reg & 0xFFFFFBFF); return; } -static u32 is_cram_inited() -{ - volatile unsigned long spr_reg; - - /* - * If CRAM is initialized already, then don't reinitialize it again. - * In the case of NAND boot and SPI boot, CRAM will already be - * initialized by the pre-loader - */ - spr_reg = (volatile unsigned long) mfspr(SPRG7); - if (spr_reg == LOAK_CRAM) { - return 1; - } else { - return 0; - } -} - -/****** - * return 0 if not CRAM - * return 1 if CRAM and it's already inited by preloader - * else return cram_id (CRAM Device Identification Register) - ******/ -static u32 is_cram(void) -{ - u32 gpio_TCR, gpio_OSRL, gpio_OR, gpio_ISR1L; - volatile u32 gpio_reg; - volatile u32 cram_id = 0; - - if (is_cram_inited() == 1) { - /* this is CRAM and it is already inited (by preloader) */ - cram_id = 1; - } else { - /* - * # CRAM CLOCK - * set GPIO0_TCR.G8 = 1 - * set GPIO0_OSRL.G8 = 0 - * set GPIO0_OR.G8 = 0 - */ - gpio_reg = in32(GPIO0_TCR); - gpio_TCR = gpio_reg; - out32(GPIO0_TCR, gpio_reg | 0x00800000); - gpio_reg = in32(GPIO0_OSRL); - gpio_OSRL = gpio_reg; - out32(GPIO0_OSRL, gpio_reg & 0xffffbfff); - gpio_reg = in32(GPIO0_OR); - gpio_OR = gpio_reg; - out32(GPIO0_OR, gpio_reg & 0xff7fffff); - - /* - * # CRAM Addreaa Valid - * set GPIO0_TCR.G10 = 1 - * set GPIO0_OSRL.G10 = 0 - * set GPIO0_OR.G10 = 0 - */ - gpio_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, gpio_reg | 0x00200000); - gpio_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, gpio_reg & 0xfffffbff); - gpio_reg = in32(GPIO0_OR); - out32(GPIO0_OR, gpio_reg & 0xffdfffff); - - /* - * # config input (EBC_WAIT) - * set GPIO0_ISR1L.G9 = 1 - * set GPIO0_TCR.G9 = 0 - */ - gpio_reg = in32(GPIO0_ISR1L); - gpio_ISR1L = gpio_reg; - out32(GPIO0_ISR1L, gpio_reg | 0x00001000); - gpio_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, gpio_reg & 0xffbfffff); - - /* - * Enable CRE to read Registers - * set GPIO0_TCR.21 = 1 - * set GPIO1_OR.21 = 1 - */ - gpio_reg = in32(GPIO1_TCR); - out32(GPIO1_TCR, gpio_reg | 0x00000400); - - gpio_reg = in32(GPIO1_OR); - out32(GPIO1_OR, gpio_reg | 0x00000400); - - /* Read Version ID */ - cram_id = (volatile u32) in32(CRAM_BANK0_BASE+CRAM_DIDR); - udelay(100000); - - asm volatile(" sync"); - asm volatile(" eieio"); - - debug("Cram ID: %X ", cram_id); - - switch (cram_id) { - case MICRON_MT45W8MW16BGX_CRAM_ID: - case MICRON_MT45W8MW16BGX_CRAM_ID2: - /* supported CRAM vendor/part */ - break; - case CRAM_DEVID_NOT_SUPPORTED: - default: - /* check for DIDR Vendor ID of Micron */ - if ((cram_id & CRAM_DIDR_VENDOR_ID_MASK) == - MICRON_DIDR_VENDOR_ID) - { - /* supported CRAM vendor */ - break; - } - /* this is not CRAM or not supported CRAM vendor/part */ - cram_id = 0; - /* - * reset the GPIO registers to the values that were - * there before this routine - */ - out32(GPIO0_TCR, gpio_TCR); - out32(GPIO0_OSRL, gpio_OSRL); - out32(GPIO0_OR, gpio_OR); - out32(GPIO0_ISR1L, gpio_ISR1L); - break; - } - } - - return cram_id; -} - -static long int cram_init(u32 already_inited) -{ - volatile u32 tmp_reg; - u32 cram_wr_val; - - if (already_inited == 0) return 0; - - /* - * If CRAM is initialized already, then don't reinitialize it again. - * In the case of NAND boot and SPI boot, CRAM will already be - * initialized by the pre-loader - */ - if (already_inited != 1) { - /* - * #o CRAM Card - * # - CRAMCRE @reg16 = 1; for CRAM to use - * # - CRAMCRE @reg16 = 0; for CRAM to program - * - * # enable CRAM SEL, move from setEPLD.cmd - * set EPLD0_MUX_CTL.OECRAM = 0 - * set EPLD0_MUX_CTL.CRAMCR = 1 - * set EPLD0_ETHRSTBOOT.SLCRAM = 0 - * #end - */ - - /* - * #1. EBC need to program READY, CLK, ADV for ASync mode - * # config output - */ - - /* - * # CRAM CLOCK - * set GPIO0_TCR.G8 = 1 - * set GPIO0_OSRL.G8 = 0 - * set GPIO0_OR.G8 = 0 - */ - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg | 0x00800000); - tmp_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, tmp_reg & 0xffffbfff); - tmp_reg = in32(GPIO0_OR); - out32(GPIO0_OR, tmp_reg & 0xff7fffff); - - /* - * # CRAM Addreaa Valid - * set GPIO0_TCR.G10 = 1 - * set GPIO0_OSRL.G10 = 0 - * set GPIO0_OR.G10 = 0 - */ - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg | 0x00200000); - tmp_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, tmp_reg & 0xfffffbff); - tmp_reg = in32(GPIO0_OR); - out32(GPIO0_OR, tmp_reg & 0xffdfffff); - - /* - * # config input (EBC_WAIT) - * set GPIO0_ISR1L.G9 = 1 - * set GPIO0_TCR.G9 = 0 - */ - tmp_reg = in32(GPIO0_ISR1L); - out32(GPIO0_ISR1L, tmp_reg | 0x00001000); - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg & 0xffbfffff); - - /* - * # config CS4 from GPIO - * set GPIO0_TCR.G0 = 1 - * set GPIO0_OSRL.G0 = 1 - */ - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg | 0x80000000); - tmp_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, tmp_reg | 0x40000000); - - /* - * #2. EBC in Async mode - * # set EBC0_PB1AP = 0x078f0ec0 - * set EBC0_PB1AP = 0x078f1ec0 - * set EBC0_PB2AP = 0x078f1ec0 - */ - mtebc(pb1ap, 0x078F1EC0); - mtebc(pb2ap, 0x078F1EC0); - - /* - * #set EBC0_PB1CR = 0x000bc000 - * #enable CS2 for CRAM - * set EBC0_PB2CR = 0x020bc000 - */ - mtebc(pb1cr, 0x000BC000); - mtebc(pb2cr, 0x020BC000); - - /* - * #3. set CRAM in Sync mode - * #exec cm_bcr_write.cmd { 0x701f } - * #3. set CRAM in Sync mode (full drv strength) - * exec cm_bcr_write.cmd { 0x701F } - */ - cram_wr_val = 0x7012; /* CRAM burst setting */ - cram_bcr_write(cram_wr_val); - - /* - * #4. EBC in Sync mode - * #set EBC0_PB1AP = 0x9f800fc0 - * #set EBC0_PB1AP = 0x900001c0 - * set EBC0_PB2AP = 0x9C0201c0 - * set EBC0_PB2AP = 0x9C0201c0 - */ - mtebc(pb1ap, 0x9C0201C0); - mtebc(pb2ap, 0x9C0201C0); - - /* - * #5. EBC need to program READY, CLK, ADV for Sync mode - * # config output - * set GPIO0_TCR.G8 = 1 - * set GPIO0_OSRL.G8 = 1 - * set GPIO0_TCR.G10 = 1 - * set GPIO0_OSRL.G10 = 1 - */ - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg | 0x00800000); - tmp_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, tmp_reg | 0x00004000); - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg | 0x00200000); - tmp_reg = in32(GPIO0_OSRL); - out32(GPIO0_OSRL, tmp_reg | 0x00000400); - - /* - * # config input - * set GPIO0_ISR1L.G9 = 1 - * set GPIO0_TCR.G9 = 0 - */ - tmp_reg = in32(GPIO0_ISR1L); - out32(GPIO0_ISR1L, tmp_reg | 0x00001000); - tmp_reg = in32(GPIO0_TCR); - out32(GPIO0_TCR, tmp_reg & 0xffbfffff); - - /* - * # config EBC to use RDY - * set SDR0_ULTRA0.EBCREN = 1 - */ - mfsdr(sdrultra0, tmp_reg); - mtsdr(sdrultra0, tmp_reg | 0x04000000); - - /* - * set EPLD0_MUX_CTL.OESPR3 = 0 - */ - mtspr(SPRG7, LOAK_CRAM); /* "CRAM" */ - } /* if (already_inited != 1) */ - - return (64 * 1024 * 1024); -} - -/****** - * return 0 if not PSRAM - * return 1 if is PSRAM - ******/ -static int is_psram(u32 addr) -{ - u32 test_pattern = 0xdeadbeef; - volatile u32 readback; - - if (addr == CFG_SDRAM_BASE) { - /* This is to temp enable OE for PSRAM */ - out16(EPLD_BASE+EPLD_MUXOE, 0x7f0f); - udelay(10000); - } - - out32(addr, test_pattern); - asm volatile(" sync"); - asm volatile(" eieio"); - - readback = (volatile u32) in32(addr); - asm volatile(" sync"); - asm volatile(" eieio"); - if (readback == test_pattern) { - return 1; - } else { - return 0; - } -} - -static long int psram_init(void) +long int initdram(int board_type) { - u32 readback; - long psramsize = 0; - int i; - - /* This is to temp enable OE for PSRAM */ - out16(EPLD_BASE+EPLD_MUXOE, 0x7f0f); - udelay(10000); + u32 val; - /* - * PSRAM bank 1: read then write to address 0x00000000 - */ - for (i = 0; i < 100; i++) { - if (is_psram(CFG_SDRAM_BASE + (i*256)) == 1) { - readback = PSRAM_PASS; - } else { - readback = PSRAM_FAIL; - break; - } - } - if (readback == PSRAM_PASS) { - debug("psram_init(bank0): pass\n"); - psramsize = (16 * 1024 * 1024); - } else { - debug("psram_init(bank0): fail\n"); - return 0; - } + /* 1. EBC need to program READY, CLK, ADV for ASync mode */ + gpio_config(CFG_GPIO_CRAM_CLK, GPIO_OUT, GPIO_SEL, GPIO_OUT_0); + gpio_config(CFG_GPIO_CRAM_ADV, GPIO_OUT, GPIO_SEL, GPIO_OUT_0); + gpio_config(CFG_GPIO_CRAM_CRE, GPIO_OUT, GPIO_SEL, GPIO_OUT_0); + gpio_config(CFG_GPIO_CRAM_WAIT, GPIO_IN, GPIO_SEL, GPIO_OUT_NO_CHG); -#if 0 - /* - * PSRAM bank 1: read then write to address 0x01000000 - */ - for (i = 0; i < 100; i++) { - if (is_psram((1 << 24) + (i*256)) == 1) { - readback = PSRAM_PASS; - } else { - readback = PSRAM_FAIL; - break; - } - } - if (readback == PSRAM_PASS) { - debug("psram_init(bank1): pass\n"); - psramsize = psramsize + (16 * 1024 * 1024); - } -#endif + /* 2. EBC in Async mode */ + mtebc(pb1ap, 0x078F1EC0); + mtebc(pb2ap, 0x078F1EC0); + mtebc(pb1cr, 0x000BC000); + mtebc(pb2cr, 0x020BC000); - mtspr(SPRG7, LOAK_PSRAM); /* "PSRA" - PSRAM */ + /* 3. Set CRAM in Sync mode */ + cram_bcr_write(0x7012); /* CRAM burst setting */ - return psramsize; -} + /* 4. EBC in Sync mode */ + mtebc(pb1ap, 0x9C0201C0); + mtebc(pb2ap, 0x9C0201C0); -long int initdram(int board_type) -{ - long int sram_size; - u32 cram_inited; + /* Set GPIO pins back to alternate function */ + gpio_config(CFG_GPIO_CRAM_CLK, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG); + gpio_config(CFG_GPIO_CRAM_ADV, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG); - /* Determine Attached Memory Expansion Card*/ - cram_inited = is_cram(); - if (cram_inited != 0) { /* CRAM */ - debug("CRAM Expansion Card attached\n"); - sram_size = cram_init(cram_inited); - } else if (is_psram(CFG_SDRAM_BASE+4) == 1) { /* PSRAM */ - debug("PSRAM Expansion Card attached\n"); - sram_size = psram_init(); - } else { /* no SRAM */ - debug("No Memory Card Attached!!\n"); - sram_size = 0; - } + /* Config EBC to use RDY */ + mfsdr(sdrultra0, val); + mtsdr(sdrultra0, val | 0x04000000); - return sram_size; + return (CFG_MBYTES_RAM << 20); } int testdram(void)