blackfin: bf60x: Port blackfin core architecture code to boot on bf60x.

Set up clocks, DDR controller, Nor flash controller, reboot,
serial port. Add new SPI boot modes.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>

1 files changed, 306 insertions, 19 deletions

diff --git a/arch/blackfin/cpu/initcode.c b/arch/blackfin/cpu/initcode.c
index fb3a101c7..a71714865 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');
 	}
@@ -316,6 +474,7 @@ 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 +482,7 @@ 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 +495,10 @@ maybe_self_refresh(ADI_BOOT_DATA *bs)
 	if (!CONFIG_MEM_SIZE)
 		return false;
 
+#ifdef __ADSPBF60x__
+
+#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 +514,7 @@ maybe_self_refresh(ADI_BOOT_DATA *bs)
 	}
 #endif
 
+#endif /* __ADSPBF60x__ */
 	serial_putc('c');
 
 	return false;
@@ -362,6 +527,37 @@ 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 +629,7 @@ 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 +678,15 @@ 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 +703,25 @@ 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 +738,84 @@ 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 +868,7 @@ program_memory_controller(ADI_BOOT_DATA *bs, bool put_into_srfs)
 # endif
 #endif
 
+#endif /* __ADSPBF60x__ */
 	serial_putc('e');
 }
 
@@ -606,7 +892,8 @@ 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]);