diff options
Diffstat (limited to 'arch/blackfin/cpu')
| -rw-r--r-- | arch/blackfin/cpu/cpu.c | 4 | ||||
| -rw-r--r-- | arch/blackfin/cpu/gpio.c | 36 | ||||
| -rw-r--r-- | arch/blackfin/cpu/initcode.c | 384 | ||||
| -rw-r--r-- | arch/blackfin/cpu/initcode.h | 52 | ||||
| -rw-r--r-- | arch/blackfin/cpu/reset.c | 6 | ||||
| -rw-r--r-- | arch/blackfin/cpu/serial.c | 81 | ||||
| -rw-r--r-- | arch/blackfin/cpu/serial.h | 222 | ||||
| -rw-r--r-- | arch/blackfin/cpu/serial1.h | 348 | ||||
| -rw-r--r-- | arch/blackfin/cpu/serial4.h | 161 | ||||
| -rw-r--r-- | arch/blackfin/cpu/start.S | 2 |
10 files changed, 1031 insertions, 265 deletions
diff --git a/arch/blackfin/cpu/cpu.c b/arch/blackfin/cpu/cpu.c index 6a0bcca..b9fdb07 100644 --- a/arch/blackfin/cpu/cpu.c +++ b/arch/blackfin/cpu/cpu.c @@ -68,7 +68,9 @@ void cpu_init_f(ulong bootflag, ulong loaded_from_ldr) /* Reset upon a double exception rather than just hanging. * Do not do bfin_read on SWRST as that will reset status bits. */ +# ifdef SWRST bfin_write_SWRST(DOUBLE_FAULT); +# endif #endif serial_early_puts("Board init flash\n"); @@ -92,7 +94,7 @@ int irq_init(void) #elif defined(SICA_IMASK0) bfin_write_SICA_IMASK0(0); bfin_write_SICA_IMASK1(0); -#else +#elif defined(SIC_IMASK) bfin_write_SIC_IMASK(0); #endif /* Set up a dummy NMI handler if needed. */ diff --git a/arch/blackfin/cpu/gpio.c b/arch/blackfin/cpu/gpio.c index 5674d42..f684be5 100644 --- a/arch/blackfin/cpu/gpio.c +++ b/arch/blackfin/cpu/gpio.c @@ -66,6 +66,14 @@ static struct gpio_port_t * const gpio_array[] = { (struct gpio_port_t *)PORTH_FER, (struct gpio_port_t *)PORTI_FER, (struct gpio_port_t *)PORTJ_FER, +#elif defined(CONFIG_BF60x) + (struct gpio_port_t *)PORTA_FER, + (struct gpio_port_t *)PORTB_FER, + (struct gpio_port_t *)PORTC_FER, + (struct gpio_port_t *)PORTD_FER, + (struct gpio_port_t *)PORTE_FER, + (struct gpio_port_t *)PORTF_FER, + (struct gpio_port_t *)PORTG_FER, #else # error no gpio arrays defined #endif @@ -216,6 +224,12 @@ static void port_setup(unsigned gpio, unsigned short usage) else gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio); SSYNC(); +#elif defined(CONFIG_BF60x) + if (usage == GPIO_USAGE) + gpio_array[gpio_bank(gpio)]->port_fer_clear = gpio_bit(gpio); + else + gpio_array[gpio_bank(gpio)]->port_fer_set = gpio_bit(gpio); + SSYNC(); #endif } @@ -290,7 +304,7 @@ static void portmux_setup(unsigned short per) } } } -#elif defined(CONFIG_BF54x) +#elif defined(CONFIG_BF54x) || defined(CONFIG_BF60x) inline void portmux_setup(unsigned short per) { u32 pmux; @@ -330,7 +344,7 @@ inline void portmux_setup(unsigned short per) # define portmux_setup(...) do { } while (0) #endif -#ifndef CONFIG_BF54x +#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x) /*********************************************************** * * FUNCTIONS: Blackfin General Purpose Ports Access Functions @@ -534,7 +548,7 @@ int peripheral_request(unsigned short per, const char *label) * be requested and used by several drivers */ -#ifdef CONFIG_BF54x +#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) { #else if (!(per & P_MAYSHARE)) { @@ -651,7 +665,7 @@ int bfin_gpio_request(unsigned gpio, const char *label) gpio, get_label(gpio)); return -EBUSY; } -#ifndef CONFIG_BF54x +#if !defined(CONFIG_BF54x) && !defined(CONFIG_BF60x) else { /* Reset POLAR setting when acquiring a gpio for the first time */ set_gpio_polar(gpio, 0); } @@ -732,12 +746,16 @@ void bfin_special_gpio_free(unsigned gpio) static inline void __bfin_gpio_direction_input(unsigned gpio) { -#ifdef CONFIG_BF54x +#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio); #else gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio); #endif +#if defined(CONFIG_BF60x) + gpio_array[gpio_bank(gpio)]->inen_set = gpio_bit(gpio); +#else gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio); +#endif } int bfin_gpio_direction_input(unsigned gpio) @@ -785,9 +803,13 @@ int bfin_gpio_direction_output(unsigned gpio, int value) local_irq_save(flags); +#if defined(CONFIG_BF60x) + gpio_array[gpio_bank(gpio)]->inen_clear = gpio_bit(gpio); +#else gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio); +#endif gpio_set_value(gpio, value); -#ifdef CONFIG_BF54x +#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio); #else gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio); @@ -801,7 +823,7 @@ int bfin_gpio_direction_output(unsigned gpio, int value) int bfin_gpio_get_value(unsigned gpio) { -#ifdef CONFIG_BF54x +#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio))); #else unsigned long flags; diff --git a/arch/blackfin/cpu/initcode.c b/arch/blackfin/cpu/initcode.c index fb3a101..1a06680 100644 --- a/arch/blackfin/cpu/initcode.c +++ b/arch/blackfin/cpu/initcode.c @@ -15,20 +15,141 @@ #include <asm/blackfin.h> #include <asm/mach-common/bits/bootrom.h> #include <asm/mach-common/bits/core.h> -#include <asm/mach-common/bits/ebiu.h> -#include <asm/mach-common/bits/pll.h> -#include <asm/mach-common/bits/uart.h> #define BUG() while (1) { asm volatile("emuexcpt;"); } #include "serial.h" +#ifndef __ADSPBF60x__ +#include <asm/mach-common/bits/ebiu.h> +#include <asm/mach-common/bits/pll.h> +#else /* __ADSPBF60x__ */ +#include <asm/mach-common/bits/cgu.h> + +#define CONFIG_BFIN_GET_DCLK_M \ + ((CONFIG_CLKIN_HZ*CONFIG_VCO_MULT)/(CONFIG_DCLK_DIV*1000000)) + +#ifndef CONFIG_DMC_DDRCFG +#if ((CONFIG_BFIN_GET_DCLK_M != 125) && \ + (CONFIG_BFIN_GET_DCLK_M != 133) && \ + (CONFIG_BFIN_GET_DCLK_M != 150) && \ + (CONFIG_BFIN_GET_DCLK_M != 166) && \ + (CONFIG_BFIN_GET_DCLK_M != 200) && \ + (CONFIG_BFIN_GET_DCLK_M != 225) && \ + (CONFIG_BFIN_GET_DCLK_M != 250)) +#error "DDR2 CLK must be in (125, 133, 150, 166, 200, 225, 250)MHz" +#endif +#endif + +/* DMC control bits */ +#define SRREQ 0x8 + +/* DMC status bits */ +#define IDLE 0x1 +#define MEMINITDONE 0x4 +#define SRACK 0x8 +#define PDACK 0x10 +#define DPDACK 0x20 +#define DLLCALDONE 0x2000 +#define PENDREF 0xF0000 +#define PHYRDPHASE 0xF00000 +#define PHYRDPHASE_OFFSET 20 + +/* DMC DLL control bits */ +#define DLLCALRDCNT 0xFF +#define DATACYC_OFFSET 8 + +struct ddr_config { + u32 ddr_clk; + u32 dmc_ddrctl; + u32 dmc_ddrcfg; + u32 dmc_ddrtr0; + u32 dmc_ddrtr1; + u32 dmc_ddrtr2; + u32 dmc_ddrmr; + u32 dmc_ddrmr1; +}; + +static struct ddr_config ddr_config_table[] = { + [0] = { + .ddr_clk = 125, /* 125MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20705212, + .dmc_ddrtr1 = 0x201003CF, + .dmc_ddrtr2 = 0x00320107, + .dmc_ddrmr = 0x00000422, + .dmc_ddrmr1 = 0x4, + }, + [1] = { + .ddr_clk = 133, /* 133MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20806313, + .dmc_ddrtr1 = 0x2013040D, + .dmc_ddrtr2 = 0x00320108, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [2] = { + .ddr_clk = 150, /* 150MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20A07323, + .dmc_ddrtr1 = 0x20160492, + .dmc_ddrtr2 = 0x00320209, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [3] = { + .ddr_clk = 166, /* 166MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20A07323, + .dmc_ddrtr1 = 0x2016050E, + .dmc_ddrtr2 = 0x00320209, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [4] = { + .ddr_clk = 200, /* 200MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20a07323, + .dmc_ddrtr1 = 0x2016050f, + .dmc_ddrtr2 = 0x00320509, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [5] = { + .ddr_clk = 225, /* 225MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20E0A424, + .dmc_ddrtr1 = 0x302006DB, + .dmc_ddrtr2 = 0x0032020D, + .dmc_ddrmr = 0x00000842, + .dmc_ddrmr1 = 0x4, + }, + [6] = { + .ddr_clk = 250, /* 250MHz */ + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20E0A424, + .dmc_ddrtr1 = 0x3020079E, + .dmc_ddrtr2 = 0x0032050D, + .dmc_ddrmr = 0x00000842, + .dmc_ddrmr1 = 0x4, + }, +}; +#endif /* __ADSPBF60x__ */ + __attribute__((always_inline)) static inline void serial_init(void) { - uint32_t uart_base = UART_DLL; + uint32_t uart_base = UART_BASE; -#ifdef __ADSPBF54x__ +#if defined(__ADSPBF54x__) || defined(__ADSPBF60x__) # ifdef BFIN_BOOT_UART_USE_RTS # define BFIN_UART_USE_RTS 1 # else @@ -38,7 +159,12 @@ static inline void serial_init(void) size_t i; /* force RTS rather than relying on auto RTS */ +#if BFIN_UART_HW_VER < 4 bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) | FCPOL); +#else + bfin_write32(&pUART->control, bfin_read32(&pUART->control) | + FCPOL); +#endif /* Wait for the line to clear up. We cannot rely on UART * registers as none of them reflect the status of the RSR. @@ -68,13 +194,14 @@ static inline void serial_init(void) #endif if (BFIN_DEBUG_EARLY_SERIAL) { - int ucen = bfin_read16(&pUART->gctl) & UCEN; + int enabled = serial_early_enabled(uart_base); + serial_early_init(uart_base); /* If the UART is off, that means we need to program * the baud rate ourselves initially. */ - if (ucen != UCEN) + if (!enabled) serial_early_set_baud(uart_base, CONFIG_BAUDRATE); } } @@ -82,12 +209,17 @@ static inline void serial_init(void) __attribute__((always_inline)) static inline void serial_deinit(void) { -#ifdef __ADSPBF54x__ - uint32_t uart_base = UART_DLL; +#if defined(__ADSPBF54x__) || defined(__ADSPBF60x__) + uint32_t uart_base = UART_BASE; if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) { /* clear forced RTS rather than relying on auto RTS */ +#if BFIN_UART_HW_VER < 4 bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) & ~FCPOL); +#else + bfin_write32(&pUART->control, bfin_read32(&pUART->control) & + ~FCPOL); +#endif } #endif } @@ -95,7 +227,7 @@ static inline void serial_deinit(void) __attribute__((always_inline)) static inline void serial_putc(char c) { - uint32_t uart_base = UART_DLL; + uint32_t uart_base = UART_BASE; if (!BFIN_DEBUG_EARLY_SERIAL) return; @@ -103,9 +235,9 @@ static inline void serial_putc(char c) if (c == '\n') serial_putc('\r'); - bfin_write16(&pUART->thr, c); + bfin_write(&pUART->thr, c); - while (!(bfin_read16(&pUART->lsr) & TEMT)) + while (!(_lsr_read(pUART) & TEMT)) continue; } @@ -152,6 +284,24 @@ program_nmi_handler(void) # define bfin_write_SPI_BAUD bfin_write_SPI0_BAUD #endif +#ifdef __ADSPBF60x__ + +#ifndef CONFIG_CGU_CTL_VAL +# define CONFIG_CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CONFIG_CLKIN_HALF) +#endif + +#ifndef CONFIG_CGU_DIV_VAL +# define CONFIG_CGU_DIV_VAL \ + ((CONFIG_CCLK_DIV << CSEL_P) | \ + (CONFIG_SCLK0_DIV << S0SEL_P) | \ + (CONFIG_SCLK_DIV << SYSSEL_P) | \ + (CONFIG_SCLK1_DIV << S1SEL_P) | \ + (CONFIG_DCLK_DIV << DSEL_P) | \ + (CONFIG_OCLK_DIV << OSEL_P)) +#endif + +#else /* __ADSPBF60x__ */ + /* PLL_DIV defines */ #ifndef CONFIG_PLL_DIV_VAL # if (CONFIG_CCLK_DIV == 1) @@ -275,6 +425,8 @@ program_nmi_handler(void) # endif #endif +#endif /* __ADSPBF60x__ */ + __attribute__((always_inline)) static inline void program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB) { @@ -283,8 +435,14 @@ program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB) /* Save the clock pieces that are used in baud rate calculation */ if (BFIN_DEBUG_EARLY_SERIAL || CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) { serial_putc('b'); +#ifdef __ADSPBF60x__ + *sdivB = bfin_read_CGU_DIV(); + *sdivB = ((*sdivB >> 8) & 0x1f) * ((*sdivB >> 5) & 0x7); + *vcoB = (bfin_read_CGU_CTL() >> 8) & 0x7f; +#else *sdivB = bfin_read_PLL_DIV() & 0xf; *vcoB = (bfin_read_PLL_CTL() >> 9) & 0x3f; +#endif *divB = serial_early_get_div(); serial_putc('c'); } @@ -303,8 +461,21 @@ program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB) */ if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS) { serial_putc('e'); +#ifdef __ADSPBF60x__ + bfin_write_SEC_GCTL(0x2); + SSYNC(); + bfin_write_SEC_FCTL(0xc1); + bfin_write_SEC_SCTL(2, bfin_read_SEC_SCTL(2) | 0x6); + + bfin_write_SEC_CCTL(0x2); + SSYNC(); + bfin_write_SEC_GCTL(0x1); + bfin_write_SEC_CCTL(0x1); +#endif bfin_write_WDOG_CNT(MSEC_TO_SCLK(CONFIG_HW_WATCHDOG_TIMEOUT_INITCODE)); +#if CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_UART bfin_write_WDOG_CTL(0); +#endif serial_putc('f'); } #endif @@ -316,6 +487,7 @@ program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB) * boot. Once we switch over to u-boot's SPI flash driver, we'll * increase the speed appropriately. */ +#ifdef SPI_BAUD if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_SPI_MASTER) { serial_putc('h'); if (BOOTROM_SUPPORTS_SPI_FAST_READ && CONFIG_SPI_BAUD_INITBLOCK < 4) @@ -323,6 +495,7 @@ program_early_devices(ADI_BOOT_DATA *bs, uint *sdivB, uint *divB, uint *vcoB) bfin_write_SPI_BAUD(CONFIG_SPI_BAUD_INITBLOCK); serial_putc('i'); } +#endif serial_putc('j'); } @@ -335,6 +508,15 @@ maybe_self_refresh(ADI_BOOT_DATA *bs) if (!CONFIG_MEM_SIZE) return false; +#ifdef __ADSPBF60x__ + /* resume from hibernate, return false let ddr initialize */ + if ((bfin_read32(DPM0_STAT) & 0xF0) == 0x50) { + serial_putc('b'); + return false; + } + +#else /* __ADSPBF60x__ */ + /* If external memory is enabled, put it into self refresh first. */ #if defined(EBIU_RSTCTL) if (bfin_read_EBIU_RSTCTL() & DDR_SRESET) { @@ -350,6 +532,7 @@ maybe_self_refresh(ADI_BOOT_DATA *bs) } #endif +#endif /* __ADSPBF60x__ */ serial_putc('c'); return false; @@ -362,6 +545,37 @@ program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs) serial_putc('a'); +#ifdef __ADSPBF60x__ + if (bfin_read_DMC0_STAT() & MEMINITDONE) { + bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ); + SSYNC(); + while (!(bfin_read_DMC0_STAT() & SRACK)) + continue; + } + + /* Don't set the same value of MSEL and DF to CGU_CTL */ + if ((bfin_read_CGU_CTL() & (MSEL_MASK | DF_MASK)) + != CONFIG_CGU_CTL_VAL) { + bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL); + bfin_write_CGU_CTL(CONFIG_CGU_CTL_VAL); + while ((bfin_read_CGU_STAT() & (CLKSALGN | PLLBP)) || + !(bfin_read_CGU_STAT() & PLLLK)) + continue; + } + + bfin_write_CGU_DIV(CONFIG_CGU_DIV_VAL | UPDT); + while (bfin_read_CGU_STAT() & CLKSALGN) + continue; + + if (bfin_read_DMC0_STAT() & MEMINITDONE) { + bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ); + SSYNC(); + while (bfin_read_DMC0_STAT() & SRACK) + continue; + } + +#else /* __ADSPBF60x__ */ + vr_ctl = bfin_read_VR_CTL(); serial_putc('b'); @@ -433,7 +647,7 @@ program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs) #elif defined(SICA_IWR0) bfin_write_SICA_IWR0(1); bfin_write_SICA_IWR1(0); -#else +#elif defined(SIC_IWR) bfin_write_SIC_IWR(1); #endif @@ -482,13 +696,15 @@ program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs) #elif defined(SICA_IWR0) bfin_write_SICA_IWR0(-1); bfin_write_SICA_IWR1(-1); -#else +#elif defined(SIC_IWR) bfin_write_SIC_IWR(-1); #endif serial_putc('n'); } +#endif /* __ADSPBF60x__ */ + serial_putc('o'); return vr_ctl; @@ -505,16 +721,25 @@ update_serial_clocks(ADI_BOOT_DATA *bs, uint sdivB, uint divB, uint vcoB) * for dividing which means we'd generate a libgcc reference. */ if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) { - serial_putc('b'); unsigned int sdivR, vcoR; - sdivR = bfin_read_PLL_DIV() & 0xf; - vcoR = (bfin_read_PLL_CTL() >> 9) & 0x3f; int dividend = sdivB * divB * vcoR; int divisor = vcoB * sdivR; unsigned int quotient; + + serial_putc('b'); + +#ifdef __ADSPBF60x__ + sdivR = bfin_read_CGU_DIV(); + sdivR = ((sdivR >> 8) & 0x1f) * ((sdivR >> 5) & 0x7); + vcoR = (bfin_read_CGU_CTL() >> 8) & 0x7f; +#else + sdivR = bfin_read_PLL_DIV() & 0xf; + vcoR = (bfin_read_PLL_CTL() >> 9) & 0x3f; +#endif + for (quotient = 0; dividend > 0; ++quotient) dividend -= divisor; - serial_early_put_div(UART_DLL, quotient - ANOMALY_05000230); + serial_early_put_div(quotient - ANOMALY_05000230); serial_putc('c'); } @@ -531,6 +756,85 @@ program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs) serial_putc('b'); +#ifdef __ADSPBF60x__ + int dlldatacycle; + int dll_ctl; + int i = 0; + + if (CONFIG_BFIN_GET_DCLK_M == 125) + i = 0; + else if (CONFIG_BFIN_GET_DCLK_M == 133) + i = 1; + else if (CONFIG_BFIN_GET_DCLK_M == 150) + i = 2; + else if (CONFIG_BFIN_GET_DCLK_M == 166) + i = 3; + else if (CONFIG_BFIN_GET_DCLK_M == 200) + i = 4; + else if (CONFIG_BFIN_GET_DCLK_M == 225) + i = 5; + else if (CONFIG_BFIN_GET_DCLK_M == 250) + i = 6; + +#if 0 + for (i = 0; i < ARRAY_SIZE(ddr_config_table); i++) + if (CONFIG_BFIN_GET_DCLK_M == ddr_config_table[i].ddr_clk) + break; +#endif + +#ifndef CONFIG_DMC_DDRCFG + bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg); +#else + bfin_write_DMC0_CFG(CONFIG_DMC_DDRCFG); +#endif +#ifndef CONFIG_DMC_DDRTR0 + bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0); +#else + bfin_write_DMC0_TR0(CONFIG_DMC_DDRTR0); +#endif +#ifndef CONFIG_DMC_DDRTR1 + bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1); +#else + bfin_write_DMC0_TR1(CONFIG_DMC_DDRTR1); +#endif +#ifndef CONFIG_DMC_DDRTR2 + bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2); +#else + bfin_write_DMC0_TR2(CONFIG_DMC_DDRTR2); +#endif +#ifndef CONFIG_DMC_DDRMR + bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr); +#else + bfin_write_DMC0_MR(CONFIG_DMC_DDRMR); +#endif +#ifndef CONFIG_DMC_DDREMR1 + bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1); +#else + bfin_write_DMC0_EMR1(CONFIG_DMC_DDREMR1); +#endif +#ifndef CONFIG_DMC_DDRCTL + bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl); +#else + bfin_write_DMC0_CTL(CONFIG_DMC_DDRCTL); +#endif + + SSYNC(); + while (!(bfin_read_DMC0_STAT() & MEMINITDONE)) + continue; + + dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >> + PHYRDPHASE_OFFSET; + dll_ctl = bfin_read_DMC0_DLLCTL(); + dll_ctl &= 0x0ff; + bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET)); + + SSYNC(); + while (!(bfin_read_DMC0_STAT() & DLLCALDONE)) + continue; + serial_putc('!'); + +#else /* __ADSPBF60x__ */ + /* Program the external memory controller before we come out of * self-refresh. This only works with our SDRAM controller. */ @@ -583,6 +887,7 @@ program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs) # endif #endif +#endif /* __ADSPBF60x__ */ serial_putc('e'); } @@ -595,7 +900,46 @@ check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs) return; serial_putc('b'); +#ifdef __ADSPBF60x__ + if (bfin_read32(DPM0_RESTORE0) != 0) { + uint32_t reg = bfin_read_DMC0_CTL(); + reg &= ~0x8; + bfin_write_DMC0_CTL(reg); + + while ((bfin_read_DMC0_STAT() & 0x8)) + continue; + while (!(bfin_read_DMC0_STAT() & 0x1)) + continue; + + serial_putc('z'); + uint32_t *hibernate_magic = bfin_read32(DPM0_RESTORE4); + SSYNC(); /* make sure memory controller is done */ + if (hibernate_magic[0] == 0xDEADBEEF) { + serial_putc('c'); + SSYNC(); + bfin_write_EVT15(hibernate_magic[1]); + bfin_write_IMASK(EVT_IVG15); + __asm__ __volatile__ ( + /* load reti early to avoid anomaly 281 */ + "reti = %2;" + /* clear hibernate magic */ + "[%0] = %1;" + /* load stack pointer */ + "SP = [%0 + 8];" + /* lower ourselves from reset ivg to ivg15 */ + "raise 15;" + "nop;nop;nop;" + "rti;" + : + : "p"(hibernate_magic), + "d"(0x2000 /* jump.s 0 */), + "d"(0xffa00000) + ); + } + + } +#else /* Are we coming out of hibernate (suspend to memory) ? * The memory layout is: * 0x0: hibernate magic for anomaly 307 (0xDEADBEEF) @@ -606,7 +950,8 @@ check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs) */ if (ANOMALY_05000307 || vr_ctl & 0x8000) { uint32_t *hibernate_magic = 0; - __builtin_bfin_ssync(); /* make sure memory controller is done */ + + SSYNC(); if (hibernate_magic[0] == 0xDEADBEEF) { serial_putc('c'); bfin_write_EVT15(hibernate_magic[1]); @@ -627,6 +972,7 @@ check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs) } serial_putc('d'); } +#endif serial_putc('e'); } diff --git a/arch/blackfin/cpu/initcode.h b/arch/blackfin/cpu/initcode.h index e0aad6d..1fec7f3 100644 --- a/arch/blackfin/cpu/initcode.h +++ b/arch/blackfin/cpu/initcode.h @@ -15,6 +15,8 @@ # define serial_putc(c) #endif +#ifndef __ADSPBF60x__ + #ifndef CONFIG_EBIU_RSTCTL_VAL # define CONFIG_EBIU_RSTCTL_VAL 0 /* only MDDRENABLE is useful */ #endif @@ -30,6 +32,8 @@ # error invalid EBIU_DDRQUE value: must not set reserved bits #endif +#endif /* __ADSPBF60x__ */ + __attribute__((always_inline)) static inline void program_async_controller(ADI_BOOT_DATA *bs) { @@ -45,10 +49,13 @@ program_async_controller(ADI_BOOT_DATA *bs) serial_putc('a'); +#ifdef __ADSPBF60x__ /* Program the async banks controller. */ +#ifdef EBIU_AMGCTL bfin_write_EBIU_AMBCTL0(CONFIG_EBIU_AMBCTL0_VAL); bfin_write_EBIU_AMBCTL1(CONFIG_EBIU_AMBCTL1_VAL); bfin_write_EBIU_AMGCTL(CONFIG_EBIU_AMGCTL_VAL); +#endif serial_putc('b'); @@ -66,6 +73,51 @@ program_async_controller(ADI_BOOT_DATA *bs) #endif serial_putc('c'); + +#else /* __ADSPBF60x__ */ + /* Program the static memory controller. */ +# ifdef CONFIG_SMC_GCTL_VAL + bfin_write_SMC_GCTL(CONFIG_SMC_GCTL_VAL); +# endif +# ifdef CONFIG_SMC_B0CTL_VAL + bfin_write_SMC_B0CTL(CONFIG_SMC_B0CTL_VAL); +# endif +# ifdef CONFIG_SMC_B0TIM_VAL + bfin_write_SMC_B0TIM(CONFIG_SMC_B0TIM_VAL); +# endif +# ifdef CONFIG_SMC_B0ETIM_VAL + bfin_write_SMC_B0ETIM(CONFIG_SMC_B0ETIM_VAL); +# endif +# ifdef CONFIG_SMC_B1CTL_VAL + bfin_write_SMC_B1CTL(CONFIG_SMC_B1CTL_VAL); +# endif +# ifdef CONFIG_SMC_B1TIM_VAL + bfin_write_SMC_B1TIM(CONFIG_SMC_B1TIM_VAL); +# endif +# ifdef CONFIG_SMC_B1ETIM_VAL + bfin_write_SMC_B1ETIM(CONFIG_SMC_B1ETIM_VAL); +# endif +# ifdef CONFIG_SMC_B2CTL_VAL + bfin_write_SMC_B2CTL(CONFIG_SMC_B2CTL_VAL); +# endif +# ifdef CONFIG_SMC_B2TIM_VAL + bfin_write_SMC_B2TIM(CONFIG_SMC_B2TIM_VAL); +# endif +# ifdef CONFIG_SMC_B2ETIM_VAL + bfin_write_SMC_B2ETIM(CONFIG_SMC_B2ETIM_VAL); +# endif +# ifdef CONFIG_SMC_B3CTL_VAL + bfin_write_SMC_B3CTL(CONFIG_SMC_B3CTL_VAL); +# endif +# ifdef CONFIG_SMC_B3TIM_VAL + bfin_write_SMC_B3TIM(CONFIG_SMC_B3TIM_VAL); +# endif +# ifdef CONFIG_SMC_B3ETIM_VAL + bfin_write_SMC_B3ETIM(CONFIG_SMC_B3ETIM_VAL); +# endif + +#endif + serial_putc('d'); } #endif diff --git a/arch/blackfin/cpu/reset.c b/arch/blackfin/cpu/reset.c index ff39035..b6718d3 100644 --- a/arch/blackfin/cpu/reset.c +++ b/arch/blackfin/cpu/reset.c @@ -23,6 +23,7 @@ __attribute__ ((__l1_text__, __noreturn__)) static void bfin_reset(void) { +#ifdef SWRST /* Wait for completion of "system" events such as cache line * line fills so that we avoid infinite stalls later on as * much as possible. This code is in L1, so it won't trigger @@ -66,10 +67,15 @@ static void bfin_reset(void) : "a" (15 * 1) : "LC1", "LB1", "LT1" ); +#endif while (1) +#if defined(__ADSPBF60x__) + bfin_write_RCU0_CTL(0x1); +#else /* Issue core reset */ asm("raise 1"); +#endif } /* We need to trampoline ourselves up into L1 since our linker diff --git a/arch/blackfin/cpu/serial.c b/arch/blackfin/cpu/serial.c index 64340ec..9847e9f 100644 --- a/arch/blackfin/cpu/serial.c +++ b/arch/blackfin/cpu/serial.c @@ -43,7 +43,6 @@ #include <serial.h> #include <linux/compiler.h> #include <asm/blackfin.h> -#include <asm/mach-common/bits/uart.h> DECLARE_GLOBAL_DATA_PTR; @@ -52,8 +51,8 @@ DECLARE_GLOBAL_DATA_PTR; #include "serial.h" #ifdef CONFIG_DEBUG_SERIAL -static uint16_t cached_lsr[256]; -static uint16_t cached_rbr[256]; +static uart_lsr_t cached_lsr[256]; +static uart_lsr_t cached_rbr[256]; static size_t cache_count; /* The LSR is read-to-clear on some parts, so we have to make sure status @@ -61,10 +60,10 @@ static size_t cache_count; * works around anomaly 05000099 at the same time by keeping a cumulative * tally of all the status bits. */ -static uint16_t uart_lsr_save; -static uint16_t uart_lsr_read(uint32_t uart_base) +static uart_lsr_t uart_lsr_save; +static uart_lsr_t uart_lsr_read(uint32_t uart_base) { - uint16_t lsr = bfin_read(&pUART->lsr); + uart_lsr_t lsr = _lsr_read(pUART); uart_lsr_save |= (lsr & (OE|PE|FE|BI)); return lsr | uart_lsr_save; } @@ -72,20 +71,20 @@ static uint16_t uart_lsr_read(uint32_t uart_base) static void uart_lsr_clear(uint32_t uart_base) { uart_lsr_save = 0; - bfin_write(&pUART->lsr, bfin_read(&pUART->lsr) | -1); + _lsr_write(pUART, -1); } #else /* When debugging is disabled, we only care about the DR bit, so if other * bits get set/cleared, we don't really care since we don't read them * anyways (and thus anomaly 05000099 is irrelevant). */ -static inline uint16_t uart_lsr_read(uint32_t uart_base) +static inline uart_lsr_t uart_lsr_read(uint32_t uart_base) { - return bfin_read(&pUART->lsr); + return _lsr_read(pUART); } static void uart_lsr_clear(uint32_t uart_base) { - bfin_write(&pUART->lsr, bfin_read(&pUART->lsr) | -1); + _lsr_write(pUART, -1); } #endif @@ -127,20 +126,14 @@ static int uart_getc(uint32_t uart_base) #ifdef CONFIG_DEBUG_SERIAL /* grab & clear the LSR */ - uint16_t uart_lsr_val = uart_lsr_read(uart_base); + uart_lsr_t uart_lsr_val = uart_lsr_read(uart_base); cached_lsr[cache_count] = uart_lsr_val; cached_rbr[cache_count] = uart_rbr_val; cache_count = (cache_count + 1) % ARRAY_SIZE(cached_lsr); if (uart_lsr_val & (OE|PE|FE|BI)) { - uint16_t dll, dlh; printf("\n[SERIAL ERROR]\n"); - ACCESS_LATCH(); - dll = bfin_read(&pUART->dll); - dlh = bfin_read(&pUART->dlh); - ACCESS_PORT_IER(); - printf("\tDLL=0x%x DLH=0x%x\n", dll, dlh); do { --cache_count; printf("\t%3zu: RBR=0x%02x LSR=0x%02x\n", cache_count, @@ -160,6 +153,8 @@ static int uart_getc(uint32_t uart_base) # define LOOP(x) #endif +#if BFIN_UART_HW_VER < 4 + LOOP( static void uart_loop(uint32_t uart_base, int state) { @@ -178,6 +173,28 @@ static void uart_loop(uint32_t uart_base, int state) } ) +#else + +LOOP( +static void uart_loop(uint32_t uart_base, int state) +{ + u32 control; + + /* Drain the TX fifo first so bytes don't come back */ + while (!(uart_lsr_read(uart_base) & TEMT)) + continue; + + control = bfin_read(&pUART->control); + if (state) + control |= LOOP_ENA | MRTS; + else + control &= ~(LOOP_ENA | MRTS); + bfin_write(&pUART->control, control); +} +) + +#endif + #ifdef CONFIG_SYS_BFIN_UART static void uart_puts(uint32_t uart_base, const char *s) @@ -246,16 +263,16 @@ struct serial_device bfin_serial##n##_device = { \ LOOP(.loop = uart##n##_loop) \ }; -#ifdef UART0_DLL +#ifdef UART0_RBR DECL_BFIN_UART(0) #endif -#ifdef UART1_DLL +#ifdef UART1_RBR DECL_BFIN_UART(1) #endif -#ifdef UART2_DLL +#ifdef UART2_RBR DECL_BFIN_UART(2) #endif -#ifdef UART3_DLL +#ifdef UART3_RBR DECL_BFIN_UART(3) #endif @@ -274,16 +291,16 @@ __weak struct serial_device *default_serial_console(void) void bfin_serial_initialize(void) { -#ifdef UART0_DLL +#ifdef UART0_RBR serial_register(&bfin_serial0_device); #endif -#ifdef UART1_DLL +#ifdef UART1_RBR serial_register(&bfin_serial1_device); #endif -#ifdef UART2_DLL +#ifdef UART2_RBR serial_register(&bfin_serial2_device); #endif -#ifdef UART3_DLL +#ifdef UART3_RBR serial_register(&bfin_serial3_device); #endif } @@ -293,7 +310,7 @@ void bfin_serial_initialize(void) /* Symbol for our assembly to call. */ void serial_set_baud(uint32_t baud) { - serial_early_set_baud(UART_DLL, baud); + serial_early_set_baud(UART_BASE, baud); } /* Symbol for common u-boot code to call. @@ -307,7 +324,7 @@ void serial_setbrg(void) /* Symbol for our assembly to call. */ void serial_initialize(void) { - serial_early_init(UART_DLL); + serial_early_init(UART_BASE); } /* Symbol for common u-boot code to call. */ @@ -315,23 +332,23 @@ int serial_init(void) { serial_initialize(); serial_setbrg(); - uart_lsr_clear(UART_DLL); + uart_lsr_clear(UART_BASE); return 0; } int serial_tstc(void) { - return uart_tstc(UART_DLL); + return uart_tstc(UART_BASE); } int serial_getc(void) { - return uart_getc(UART_DLL); + return uart_getc(UART_BASE); } void serial_putc(const char c) { - uart_putc(UART_DLL, c); + uart_putc(UART_BASE, c); } void serial_puts(const char *s) @@ -343,7 +360,7 @@ void serial_puts(const char *s) LOOP( void serial_loop(int state) { - uart_loop(UART_DLL, state); + uart_loop(UART_BASE, state); } ) diff --git a/arch/blackfin/cpu/serial.h b/arch/blackfin/cpu/serial.h index 8a076dd..9200339 100644 --- a/arch/blackfin/cpu/serial.h +++ b/arch/blackfin/cpu/serial.h @@ -3,7 +3,7 @@ * any functions defined here must be always_inline since * initcode cannot have function calls. * - * Copyright (c) 2004-2007 Analog Devices Inc. + * Copyright (c) 2004-2011 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -12,7 +12,7 @@ #define __BFIN_CPU_SERIAL_H__ #include <asm/blackfin.h> -#include <asm/mach-common/bits/uart.h> +#include <asm/portmux.h> #ifndef CONFIG_UART_CONSOLE # define CONFIG_UART_CONSOLE 0 @@ -24,88 +24,34 @@ # define BFIN_DEBUG_EARLY_SERIAL 0 #endif -#ifndef __ASSEMBLY__ - -#include <asm/portmux.h> - -#define LOB(x) ((x) & 0xFF) -#define HIB(x) (((x) >> 8) & 0xFF) - -#if defined(__ADSPBF50x__) || defined(__ADSPBF54x__) +#if defined(__ADSPBF60x__) +# define BFIN_UART_HW_VER 4 +#elif defined(__ADSPBF50x__) || defined(__ADSPBF54x__) # define BFIN_UART_HW_VER 2 #else # define BFIN_UART_HW_VER 1 #endif -/* - * All Blackfin system MMRs are padded to 32bits even if the register - * itself is only 16bits. So use a helper macro to streamline this. - */ -#define __BFP(m) u16 m; u16 __pad_##m -struct bfin_mmr_serial { -#if BFIN_UART_HW_VER == 2 - __BFP(dll); - __BFP(dlh); - __BFP(gctl); - __BFP(lcr); - __BFP(mcr); - __BFP(lsr); - __BFP(msr); - __BFP(scr); - __BFP(ier_set); - __BFP(ier_clear); - __BFP(thr); - __BFP(rbr); -#else - union { - u16 dll; - u16 thr; - const u16 rbr; - }; - const u16 __spad0; - union { - u16 dlh; - u16 ier; - }; - const u16 __spad1; - const __BFP(iir); - __BFP(lcr); - __BFP(mcr); - __BFP(lsr); - __BFP(msr); - __BFP(scr); - const u32 __spad2; - __BFP(gctl); -#endif -}; -#undef __BFP - #define __PASTE_UART(num, pfx, sfx) pfx##num##_##sfx #define _PASTE_UART(num, pfx, sfx) __PASTE_UART(num, pfx, sfx) -#define MMR_UART(n) _PASTE_UART(n, UART, DLL) #define _P_UART(n, pin) _PASTE_UART(n, P_UART, pin) #define P_UART(pin) _P_UART(CONFIG_UART_CONSOLE, pin) -#ifndef UART_DLL -# define UART_DLL MMR_UART(CONFIG_UART_CONSOLE) -#else -# define UART0_DLL UART_DLL -# if CONFIG_UART_CONSOLE != 0 -# error CONFIG_UART_CONSOLE must be 0 on parts with only one UART -# endif -#endif #define pUART ((volatile struct bfin_mmr_serial *)uart_base) -#if BFIN_UART_HW_VER == 2 -# define ACCESS_LATCH() -# define ACCESS_PORT_IER() +#ifndef __ASSEMBLY__ +__attribute__((always_inline)) +static inline void serial_do_portmux(void); +#endif + +#if BFIN_UART_HW_VER < 4 +# include "serial1.h" #else -# define ACCESS_LATCH() \ - bfin_write(&pUART->lcr, bfin_read(&pUART->lcr) | DLAB) -# define ACCESS_PORT_IER() \ - bfin_write(&pUART->lcr, bfin_read(&pUART->lcr) & ~DLAB) +# include "serial4.h" #endif +#ifndef __ASSEMBLY__ + __attribute__((always_inline)) static inline void serial_do_portmux(void) { @@ -115,143 +61,7 @@ static inline void serial_do_portmux(void) return; } -#if defined(__ADSPBF50x__) -# define DO_MUX(port, mux_tx, mux_rx, tx, rx) \ - bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~(PORT_x_MUX_##mux_tx##_MASK | PORT_x_MUX_##mux_rx##_MASK)) | PORT_x_MUX_##mux_tx##_FUNC_1 | PORT_x_MUX_##mux_rx##_FUNC_1); \ - bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx); - switch (CONFIG_UART_CONSOLE) { - case 0: DO_MUX(G, 7, 7, 12, 13); break; /* Port G; mux 7; PG12 and PG13 */ - case 1: DO_MUX(F, 3, 3, 6, 7); break; /* Port F; mux 3; PF6 and PF7 */ - } - SSYNC(); -#elif defined(__ADSPBF51x__) -# define DO_MUX(port, mux_tx, mux_rx, tx, rx) \ - bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~(PORT_x_MUX_##mux_tx##_MASK | PORT_x_MUX_##mux_rx##_MASK)) | PORT_x_MUX_##mux_tx##_FUNC_2 | PORT_x_MUX_##mux_rx##_FUNC_2); \ - bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx); - switch (CONFIG_UART_CONSOLE) { - case 0: DO_MUX(G, 5, 5, 9, 10); break; /* Port G; mux 5; PG9 and PG10 */ - case 1: DO_MUX(F, 2, 3, 14, 15); break; /* Port H; mux 2/3; PH14 and PH15 */ - } - SSYNC(); -#elif defined(__ADSPBF52x__) -# define DO_MUX(port, mux, tx, rx) \ - bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~PORT_x_MUX_##mux##_MASK) | PORT_x_MUX_##mux##_FUNC_3); \ - bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx); - switch (CONFIG_UART_CONSOLE) { - case 0: DO_MUX(G, 2, 7, 8); break; /* Port G; mux 2; PG2 and PG8 */ - case 1: DO_MUX(F, 5, 14, 15); break; /* Port F; mux 5; PF14 and PF15 */ - } - SSYNC(); -#elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) - const uint16_t func[] = { PFDE, PFTE, }; - bfin_write_PORT_MUX(bfin_read_PORT_MUX() & ~func[CONFIG_UART_CONSOLE]); - bfin_write_PORTF_FER(bfin_read_PORTF_FER() | - (1 << P_IDENT(P_UART(RX))) | - (1 << P_IDENT(P_UART(TX)))); - SSYNC(); -#elif defined(__ADSPBF54x__) -# define DO_MUX(port, tx, rx) \ - bfin_write_PORT##port##_MUX((bfin_read_PORT##port##_MUX() & ~(PORT_x_MUX_##tx##_MASK | PORT_x_MUX_##rx##_MASK)) | PORT_x_MUX_##tx##_FUNC_1 | PORT_x_MUX_##rx##_FUNC_1); \ - bfin_write_PORT##port##_FER(bfin_read_PORT##port##_FER() | P##port##tx | P##port##rx); - switch (CONFIG_UART_CONSOLE) { - case 0: DO_MUX(E, 7, 8); break; /* Port E; PE7 and PE8 */ - case 1: DO_MUX(H, 0, 1); break; /* Port H; PH0 and PH1 */ - case 2: DO_MUX(B, 4, 5); break; /* Port B; PB4 and PB5 */ - case 3: DO_MUX(B, 6, 7); break; /* Port B; PB6 and PB7 */ - } - SSYNC(); -#elif defined(__ADSPBF561__) - /* UART pins could be GPIO, but they aren't pin muxed. */ -#else -# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) -# error "missing portmux logic for UART" -# endif -#endif -} - -__attribute__((always_inline)) -static inline int uart_init(uint32_t uart_base) -{ - /* always enable UART -- avoids anomalies 05000309 and 05000350 */ - bfin_write(&pUART->gctl, UCEN); - - /* Set LCR to Word Lengh 8-bit word select */ - bfin_write(&pUART->lcr, WLS_8); - - SSYNC(); - - return 0; -} - -__attribute__((always_inline)) -static inline int serial_early_init(uint32_t uart_base) -{ - /* handle portmux crap on different Blackfins */ - serial_do_portmux(); - - return uart_init(uart_base); -} - -__attribute__((always_inline)) -static inline int serial_early_uninit(uint32_t uart_base) -{ - /* disable the UART by clearing UCEN */ - bfin_write(&pUART->gctl, 0); - - return 0; -} - -__attribute__((always_inline)) -static inline void serial_early_put_div(uint32_t uart_base, uint16_t divisor) -{ - /* Set DLAB in LCR to Access DLL and DLH */ - ACCESS_LATCH(); - SSYNC(); - - /* Program the divisor to get the baud rate we want */ - bfin_write(&pUART->dll, LOB(divisor)); - bfin_write(&pUART->dlh, HIB(divisor)); - SSYNC(); - - /* Clear DLAB in LCR to Access THR RBR IER */ - ACCESS_PORT_IER(); - SSYNC(); -} - -__attribute__((always_inline)) -static inline uint16_t serial_early_get_div(void) -{ - uint32_t uart_base = UART_DLL; - - /* Set DLAB in LCR to Access DLL and DLH */ - ACCESS_LATCH(); - SSYNC(); - - uint8_t dll = bfin_read(&pUART->dll); - uint8_t dlh = bfin_read(&pUART->dlh); - uint16_t divisor = (dlh << 8) | dll; - - /* Clear DLAB in LCR to Access THR RBR IER */ - ACCESS_PORT_IER(); - SSYNC(); - - return divisor; -} - -/* We cannot use get_sclk() early on as it uses caches in external memory */ -#if defined(BFIN_IN_INITCODE) || defined(CONFIG_DEBUG_EARLY_SERIAL) -# define get_sclk() (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT / CONFIG_SCLK_DIV) -#endif - -__attribute__((always_inline)) -static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud) -{ - /* Translate from baud into divisor in terms of SCLK. The - * weird multiplication is to make sure we over sample just - * a little rather than under sample the incoming signals. - */ - serial_early_put_div(uart_base, - (get_sclk() + (baud * 8)) / (baud * 16) - ANOMALY_05000230); + serial_early_do_portmux(); } #ifndef BFIN_IN_INITCODE diff --git a/arch/blackfin/cpu/serial1.h b/arch/blackfin/cpu/serial1.h new file mode 100644 index 0000000..a20175b --- /dev/null +++ b/arch/blackfin/cpu/serial1.h @@ -0,0 +1,348 @@ +/* + * serial.h - common serial defines for early debug and serial driver. + * any functions defined here must be always_inline since + * initcode cannot have function calls. + * + * Copyright (c) 2004-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __BFIN_CPU_SERIAL1_H__ +#define __BFIN_CPU_SERIAL1_H__ + +#include <asm/mach-common/bits/uart.h> + +#ifndef __ASSEMBLY__ + +#define MMR_UART(n) _PASTE_UART(n, UART, DLL) +#ifdef UART_DLL +# define UART0_DLL UART_DLL +# if CONFIG_UART_CONSOLE != 0 +# error CONFIG_UART_CONSOLE must be 0 on parts with only one UART +# endif +#endif +#define UART_BASE MMR_UART(CONFIG_UART_CONSOLE) + +#define LOB(x) ((x) & 0xFF) +#define HIB(x) (((x) >> 8) & 0xFF) + +/* + * All Blackfin system MMRs are padded to 32bits even if the register + * itself is only 16bits. So use a helper macro to streamline this. + */ +struct bfin_mmr_serial { +#if BFIN_UART_HW_VER == 2 + u16 dll; + u16 __pad_0; + u16 dlh; + u16 __pad_1; + u16 gctl; + u16 __pad_2; + u16 lcr; + u16 __pad_3; + u16 mcr; + u16 __pad_4; + u16 lsr; + u16 __pad_5; + u16 msr; + u16 __pad_6; + u16 scr; + u16 __pad_7; + u16 ier_set; + u16 __pad_8; + u16 ier_clear; + u16 __pad_9; + u16 thr; + u16 __pad_10; + u16 rbr; + u16 __pad_11; +#else + union { + u16 dll; + u16 thr; + const u16 rbr; + }; + const u16 __spad0; + union { + u16 dlh; + u16 ier; + }; + const u16 __spad1; + const u16 iir; + u16 __pad_0; + u16 lcr; + u16 __pad_1; + u16 mcr; + u16 __pad_2; + u16 lsr; + u16 __pad_3; + u16 msr; + u16 __pad_4; + u16 scr; + u16 __pad_5; + const u32 __spad2; + u16 gctl; + u16 __pad_6; +#endif +}; + +#define uart_lsr_t uint32_t +#define _lsr_read(p) bfin_read(&p->lsr) +#define _lsr_write(p, v) bfin_write(&p->lsr, v) + +#if BFIN_UART_HW_VER == 2 +# define ACCESS_LATCH() +# define ACCESS_PORT_IER() +#else +# define ACCESS_LATCH() bfin_write_or(&pUART->lcr, DLAB) +# define ACCESS_PORT_IER() bfin_write_and(&pUART->lcr, ~DLAB) +#endif + +__attribute__((always_inline)) +static inline void serial_early_do_mach_portmux(char port, int mux_mask, + int mux_func, int port_pin) +{ + switch (port) { +#if defined(__ADSPBF54x__) + case 'B': + bfin_write_PORTB_MUX((bfin_read_PORTB_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTB_FER(bfin_read_PORTB_FER() | port_pin); + break; + case 'E': + bfin_write_PORTE_MUX((bfin_read_PORTE_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTE_FER(bfin_read_PORTE_FER() | port_pin); + break; +#endif +#if defined(__ADSPBF50x__) || defined(__ADSPBF51x__) || defined(__ADSPBF52x__) + case 'F': + bfin_write_PORTF_MUX((bfin_read_PORTF_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTF_FER(bfin_read_PORTF_FER() | port_pin); + break; + case 'G': + bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTG_FER(bfin_read_PORTG_FER() | port_pin); + break; + case 'H': + bfin_write_PORTH_MUX((bfin_read_PORTH_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTH_FER(bfin_read_PORTH_FER() | port_pin); + break; +#endif + default: + break; + } +} + +__attribute__((always_inline)) +static inline void serial_early_do_portmux(void) +{ +#if defined(__ADSPBF50x__) + switch (CONFIG_UART_CONSOLE) { + case 0: + serial_early_do_mach_portmux('G', PORT_x_MUX_7_MASK, + PORT_x_MUX_7_FUNC_1, PG12); /* TX: G; mux 7; func 1; PG12 */ + serial_early_do_mach_portmux('G', PORT_x_MUX_7_MASK, + PORT_x_MUX_7_FUNC_1, PG13); /* RX: G; mux 7; func 1; PG13 */ + break; + case 1: + serial_early_do_mach_portmux('F', PORT_x_MUX_3_MASK, + PORT_x_MUX_3_FUNC_1, PF7); /* TX: F; mux 3; func 1; PF6 */ + serial_early_do_mach_portmux('F', PORT_x_MUX_3_MASK, + PORT_x_MUX_3_FUNC_1, PF6); /* RX: F; mux 3; func 1; PF7 */ + break; + } +#elif defined(__ADSPBF51x__) + switch (CONFIG_UART_CONSOLE) { + case 0: + serial_early_do_mach_portmux('G', PORT_x_MUX_5_MASK, + PORT_x_MUX_5_FUNC_2, PG9); /* TX: G; mux 5; func 2; PG9 */ + serial_early_do_mach_portmux('G', PORT_x_MUX_5_MASK, + PORT_x_MUX_5_FUNC_2, PG10); /* RX: G; mux 5; func 2; PG10 */ + break; + case 1: + serial_early_do_mach_portmux('H', PORT_x_MUX_3_MASK, + PORT_x_MUX_3_FUNC_2, PH7); /* TX: H; mux 3; func 2; PH6 */ + serial_early_do_mach_portmux('H', PORT_x_MUX_3_MASK, + PORT_x_MUX_3_FUNC_2, PH6); /* RX: H; mux 3; func 2; PH7 */ + break; + } +#elif defined(__ADSPBF52x__) + switch (CONFIG_UART_CONSOLE) { + case 0: + serial_early_do_mach_portmux('G', PORT_x_MUX_2_MASK, + PORT_x_MUX_2_FUNC_3, PG7); /* TX: G; mux 2; func 3; PG7 */ + serial_early_do_mach_portmux('G', PORT_x_MUX_2_MASK, + PORT_x_MUX_2_FUNC_3, PG8); /* RX: G; mux 2; func 3; PG8 */ + break; + case 1: + serial_early_do_mach_portmux('F', PORT_x_MUX_5_MASK, + PORT_x_MUX_5_FUNC_3, PF14); /* TX: F; mux 5; func 3; PF14 */ + serial_early_do_mach_portmux('F', PORT_x_MUX_5_MASK, + PORT_x_MUX_5_FUNC_3, PF15); /* RX: F; mux 5; func 3; PF15 */ + break; + } +#elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) + const uint16_t func[] = { PFDE, PFTE, }; + bfin_write_PORT_MUX(bfin_read_PORT_MUX() & ~func[CONFIG_UART_CONSOLE]); + bfin_write_PORTF_FER(bfin_read_PORTF_FER() | + (1 << P_IDENT(P_UART(RX))) | + (1 << P_IDENT(P_UART(TX)))); +#elif defined(__ADSPBF54x__) + switch (CONFIG_UART_CONSOLE) { + case 0: + serial_early_do_mach_portmux('E', PORT_x_MUX_7_MASK, + PORT_x_MUX_7_FUNC_1, PE7); /* TX: E; mux 7; func 1; PE7 */ + serial_early_do_mach_portmux('E', PORT_x_MUX_8_MASK, + PORT_x_MUX_8_FUNC_1, PE8); /* RX: E; mux 8; func 1; PE8 */ + break; + case 1: + serial_early_do_mach_portmux('H', PORT_x_MUX_0_MASK, + PORT_x_MUX_0_FUNC_1, PH0); /* TX: H; mux 0; func 1; PH0 */ + serial_early_do_mach_portmux('H', PORT_x_MUX_1_MASK, + PORT_x_MUX_1_FUNC_1, PH1); /* RX: H; mux 1; func 1; PH1 */ + break; + case 2: + serial_early_do_mach_portmux('B', PORT_x_MUX_4_MASK, + PORT_x_MUX_4_FUNC_1, PB4); /* TX: B; mux 4; func 1; PB4 */ + serial_early_do_mach_portmux('B', PORT_x_MUX_5_MASK, + PORT_x_MUX_5_FUNC_1, PB5); /* RX: B; mux 5; func 1; PB5 */ + break; + case 3: + serial_early_do_mach_portmux('B', PORT_x_MUX_6_MASK, + PORT_x_MUX_6_FUNC_1, PB6); /* TX: B; mux 6; func 1; PB6 */ + serial_early_do_mach_portmux('B', PORT_x_MUX_7_MASK, + PORT_x_MUX_7_FUNC_1, PB7); /* RX: B; mux 7; func 1; PB7 */ + break; + } +#elif defined(__ADSPBF561__) + /* UART pins could be GPIO, but they aren't pin muxed. */ +#else +# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) +# error "missing portmux logic for UART" +# endif +#endif + SSYNC(); +} + +__attribute__((always_inline)) +static inline uint32_t uart_sclk(void) +{ +#if defined(BFIN_IN_INITCODE) || defined(CONFIG_DEBUG_EARLY_SERIAL) + /* We cannot use get_sclk() early on as it uses + * caches in external memory + */ + return CONFIG_CLKIN_HZ * CONFIG_VCO_MULT / CONFIG_SCLK_DIV; +#else + return get_sclk(); +#endif +} + +__attribute__((always_inline)) +static inline int uart_init(uint32_t uart_base) +{ + /* always enable UART -- avoids anomalies 05000309 and 05000350 */ + bfin_write(&pUART->gctl, UCEN); + + /* Set LCR to Word Lengh 8-bit word select */ + bfin_write(&pUART->lcr, WLS_8); + + SSYNC(); + + return 0; +} + +__attribute__((always_inline)) +static inline int serial_early_init(uint32_t uart_base) +{ + /* handle portmux crap on different Blackfins */ + serial_do_portmux(); + + return uart_init(uart_base); +} + +__attribute__((always_inline)) +static inline int serial_early_uninit(uint32_t uart_base) +{ + /* disable the UART by clearing UCEN */ + bfin_write(&pUART->gctl, 0); + + return 0; +} + +__attribute__((always_inline)) +static inline int serial_early_enabled(uint32_t uart_base) +{ + return bfin_read(&pUART->gctl) & UCEN; +} + +__attribute__((always_inline)) +static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud) +{ + /* Translate from baud into divisor in terms of SCLK. The + * weird multiplication is to make sure we over sample just + * a little rather than under sample the incoming signals. + */ + uint16_t divisor = (uart_sclk() + (baud * 8)) / (baud * 16) - + ANOMALY_05000230; + + /* Set DLAB in LCR to Access DLL and DLH */ + ACCESS_LATCH(); + SSYNC(); + + /* Program the divisor to get the baud rate we want */ + bfin_write(&pUART->dll, LOB(divisor)); + bfin_write(&pUART->dlh, HIB(divisor)); + SSYNC(); + + /* Clear DLAB in LCR to Access THR RBR IER */ + ACCESS_PORT_IER(); + SSYNC(); +} + +__attribute__((always_inline)) +static inline void serial_early_put_div(uint16_t divisor) +{ + uint32_t uart_base = UART_BASE; + + /* Set DLAB in LCR to Access DLL and DLH */ + ACCESS_LATCH(); + SSYNC(); + + /* Program the divisor to get the baud rate we want */ + bfin_write(&pUART->dll, LOB(divisor)); + bfin_write(&pUART->dlh, HIB(divisor)); + SSYNC(); + + /* Clear DLAB in LCR to Access THR RBR IER */ + ACCESS_PORT_IER(); + SSYNC(); +} + +__attribute__((always_inline)) +static inline uint16_t serial_early_get_div(void) +{ + uint32_t uart_base = UART_BASE; + + /* Set DLAB in LCR to Access DLL and DLH */ + ACCESS_LATCH(); + SSYNC(); + + uint8_t dll = bfin_read(&pUART->dll); + uint8_t dlh = bfin_read(&pUART->dlh); + uint16_t divisor = (dlh << 8) | dll; + + /* Clear DLAB in LCR to Access THR RBR IER */ + ACCESS_PORT_IER(); + SSYNC(); + + return divisor; +} + +#endif + +#endif diff --git a/arch/blackfin/cpu/serial4.h b/arch/blackfin/cpu/serial4.h new file mode 100644 index 0000000..887845c --- /dev/null +++ b/arch/blackfin/cpu/serial4.h @@ -0,0 +1,161 @@ +/* + * serial.h - common serial defines for early debug and serial driver. + * any functions defined here must be always_inline since + * initcode cannot have function calls. + * + * Copyright (c) 2004-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __BFIN_CPU_SERIAL4_H__ +#define __BFIN_CPU_SERIAL4_H__ + +#include <asm/mach-common/bits/uart4.h> + +#ifndef __ASSEMBLY__ + +#define MMR_UART(n) _PASTE_UART(n, UART, REVID) +#define UART_BASE MMR_UART(CONFIG_UART_CONSOLE) + +struct bfin_mmr_serial { + u32 revid; + u32 control; + u32 status; + u32 scr; + u32 clock; + u32 emask; + u32 emaskst; + u32 emaskcl; + u32 rbr; + u32 thr; + u32 taip; + u32 tsr; + u32 rsr; + u32 txdiv_cnt; + u32 rxdiv_cnt; +}; +#define uart_lsr_t uint32_t +#define _lsr_read(p) bfin_read(&p->status) +#define _lsr_write(p, v) bfin_write(&p->status, v) + +__attribute__((always_inline)) +static inline void serial_early_do_mach_portmux(char port, int mux_mask, + int mux_func, int port_pin) +{ + switch (port) { + case 'D': + bfin_write_PORTD_MUX((bfin_read_PORTD_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTD_FER_SET(port_pin); + break; + case 'G': + bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & + ~mux_mask) | mux_func); + bfin_write_PORTG_FER_SET(port_pin); + break; + } +} + +__attribute__((always_inline)) +static inline void serial_early_do_portmux(void) +{ +#if defined(__ADSPBF60x__) + switch (CONFIG_UART_CONSOLE) { + case 0: + serial_early_do_mach_portmux('D', PORT_x_MUX_7_MASK, + PORT_x_MUX_7_FUNC_2, PD7); /* TX: D; mux 7; func 2; PD7 */ + serial_early_do_mach_portmux('D', PORT_x_MUX_8_MASK, + PORT_x_MUX_8_FUNC_2, PD8); /* RX: D; mux 8; func 2; PD8 */ + break; + case 1: + serial_early_do_mach_portmux('G', PORT_x_MUX_15_MASK, + PORT_x_MUX_15_FUNC_1, PG15); /* TX: G; mux 15; func 1; PG15 */ + serial_early_do_mach_portmux('G', PORT_x_MUX_14_MASK, + PORT_x_MUX_14_FUNC_1, PG14); /* RX: G; mux 14; func 1; PG14 */ + break; + } +#else +# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) +# error "missing portmux logic for UART" +# endif +#endif + SSYNC(); +} + +__attribute__((always_inline)) +static inline uint32_t uart_sclk(void) +{ +#if defined(BFIN_IN_INITCODE) || defined(CONFIG_DEBUG_EARLY_SERIAL) + /* We cannot use get_sclk() early on as it uses caches in + * external memory + */ + return CONFIG_CLKIN_HZ * CONFIG_VCO_MULT / CONFIG_SCLK_DIV / + CONFIG_SCLK0_DIV; +#else + return get_sclk0(); +#endif +} + +__attribute__((always_inline)) +static inline int uart_init(uint32_t uart_base) +{ + /* always enable UART to 8-bit mode */ + bfin_write(&pUART->control, UEN | UMOD_UART | WLS_8); + + SSYNC(); + + return 0; +} + +__attribute__((always_inline)) +static inline int serial_early_init(uint32_t uart_base) +{ + /* handle portmux crap on different Blackfins */ + serial_do_portmux(); + + return uart_init(uart_base); +} + +__attribute__((always_inline)) +static inline int serial_early_uninit(uint32_t uart_base) +{ + /* disable the UART by clearing UEN */ + bfin_write(&pUART->control, 0); + + return 0; +} + +__attribute__((always_inline)) +static inline int serial_early_enabled(uint32_t uart_base) +{ + return bfin_read(&pUART->control) & UEN; +} + +__attribute__((always_inline)) +static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud) +{ + uint32_t divisor = uart_sclk() / (baud * 16); + + /* Program the divisor to get the baud rate we want */ + bfin_write(&pUART->clock, divisor); + SSYNC(); +} + +__attribute__((always_inline)) +static inline void serial_early_put_div(uint32_t divisor) +{ + uint32_t uart_base = UART_BASE; + bfin_write(&pUART->clock, divisor); +} + +__attribute__((always_inline)) +static inline uint32_t serial_early_get_div(void) +{ + uint32_t uart_base = UART_BASE; + return bfin_read(&pUART->clock); +} + +#endif + +#endif diff --git a/arch/blackfin/cpu/start.S b/arch/blackfin/cpu/start.S index 90b4d1a..7155fc8 100644 --- a/arch/blackfin/cpu/start.S +++ b/arch/blackfin/cpu/start.S @@ -65,6 +65,7 @@ ENTRY(_start) p5.h = HI(COREMMR_BASE); #ifdef CONFIG_HW_WATCHDOG +#ifndef __ADSPBF60x__ # ifndef CONFIG_HW_WATCHDOG_TIMEOUT_START # define CONFIG_HW_WATCHDOG_TIMEOUT_START 5000 # endif @@ -78,6 +79,7 @@ ENTRY(_start) /* fire up the watchdog - R0.L above needs to be 0x0000 */ W[p4 + (WDOG_CTL - SYSMMR_BASE)] = r0; #endif +#endif /* Turn on the serial for debugging the init process */ serial_early_init |