Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 262 insertions, 0 deletions

diff --git a/roms/u-boot/arch/powerpc/cpu/mpc85xx/serial_scc.c b/roms/u-boot/arch/powerpc/cpu/mpc85xx/serial_scc.c
new file mode 100644
index 000000000..a2505d1ff
--- /dev/null
+++ b/roms/u-boot/arch/powerpc/cpu/mpc85xx/serial_scc.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2003 Motorola Inc.
+ * Xianghua Xiao (X.Xiao@motorola.com)
+ * Modified based on 8260 for 8560.
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00.
+ */
+
+/*
+ * Minimal serial functions needed to use one of the SCC ports
+ * as serial console interface.
+ */
+
+#include <common.h>
+#include <asm/cpm_85xx.h>
+#include <serial.h>
+#include <asm/global_data.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_CONS_ON_SCC)
+
+#if CONFIG_CONS_INDEX == 1	/* Console on SCC1 */
+
+#define SCC_INDEX		0
+#define PROFF_SCC		PROFF_SCC1
+#define CMXSCR_MASK		(CMXSCR_GR1|CMXSCR_SC1|\
+					CMXSCR_RS1CS_MSK|CMXSCR_TS1CS_MSK)
+#define CMXSCR_VALUE		(CMXSCR_RS1CS_BRG1|CMXSCR_TS1CS_BRG1)
+#define CPM_CR_SCC_PAGE		CPM_CR_SCC1_PAGE
+#define CPM_CR_SCC_SBLOCK	CPM_CR_SCC1_SBLOCK
+
+#elif CONFIG_CONS_INDEX == 2	/* Console on SCC2 */
+
+#define SCC_INDEX		1
+#define PROFF_SCC		PROFF_SCC2
+#define CMXSCR_MASK		(CMXSCR_GR2|CMXSCR_SC2|\
+					CMXSCR_RS2CS_MSK|CMXSCR_TS2CS_MSK)
+#define CMXSCR_VALUE		(CMXSCR_RS2CS_BRG2|CMXSCR_TS2CS_BRG2)
+#define CPM_CR_SCC_PAGE		CPM_CR_SCC2_PAGE
+#define CPM_CR_SCC_SBLOCK	CPM_CR_SCC2_SBLOCK
+
+#elif CONFIG_CONS_INDEX == 3	/* Console on SCC3 */
+
+#define SCC_INDEX		2
+#define PROFF_SCC		PROFF_SCC3
+#define CMXSCR_MASK		(CMXSCR_GR3|CMXSCR_SC3|\
+					CMXSCR_RS3CS_MSK|CMXSCR_TS3CS_MSK)
+#define CMXSCR_VALUE		(CMXSCR_RS3CS_BRG3|CMXSCR_TS3CS_BRG3)
+#define CPM_CR_SCC_PAGE		CPM_CR_SCC3_PAGE
+#define CPM_CR_SCC_SBLOCK	CPM_CR_SCC3_SBLOCK
+
+#elif CONFIG_CONS_INDEX == 4	/* Console on SCC4 */
+
+#define SCC_INDEX		3
+#define PROFF_SCC		PROFF_SCC4
+#define CMXSCR_MASK		(CMXSCR_GR4|CMXSCR_SC4|\
+					CMXSCR_RS4CS_MSK|CMXSCR_TS4CS_MSK)
+#define CMXSCR_VALUE		(CMXSCR_RS4CS_BRG4|CMXSCR_TS4CS_BRG4)
+#define CPM_CR_SCC_PAGE		CPM_CR_SCC4_PAGE
+#define CPM_CR_SCC_SBLOCK	CPM_CR_SCC4_SBLOCK
+
+#else
+
+#error "console not correctly defined"
+
+#endif
+
+static int mpc85xx_serial_init(void)
+{
+	volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
+	volatile ccsr_cpm_scc_t *sp;
+	volatile scc_uart_t *up;
+	volatile cbd_t *tbdf, *rbdf;
+	volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
+	uint	dpaddr;
+
+	/* initialize pointers to SCC */
+
+	sp = (ccsr_cpm_scc_t *) &(cpm->im_cpm_scc[SCC_INDEX]);
+	up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
+
+	/* Disable transmitter/receiver.
+	*/
+	sp->gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	/* put the SCC channel into NMSI (non multiplexd serial interface)
+	 * mode and wire the selected SCC Tx and Rx clocks to BRGx (15-15).
+	 */
+	cpm->im_cpm_mux.cmxscr = \
+		(cpm->im_cpm_mux.cmxscr&~CMXSCR_MASK)|CMXSCR_VALUE;
+
+	/* Set up the baud rate generator.
+	*/
+	serial_setbrg ();
+
+	/* Allocate space for two buffer descriptors in the DP ram.
+	 * damm: allocating space after the two buffers for rx/tx data
+	 */
+
+	dpaddr = m8560_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
+
+	/* Set the physical address of the host memory buffers in
+	 * the buffer descriptors.
+	 */
+	rbdf = (cbd_t *)&(cpm->im_dprambase[dpaddr]);
+	rbdf->cbd_bufaddr = (uint) (rbdf+2);
+	rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
+	tbdf = rbdf + 1;
+	tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
+	tbdf->cbd_sc = BD_SC_WRAP;
+
+	/* Set up the uart parameters in the parameter ram.
+	*/
+	up->scc_genscc.scc_rbase = dpaddr;
+	up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
+	up->scc_genscc.scc_rfcr = CPMFCR_EB;
+	up->scc_genscc.scc_tfcr = CPMFCR_EB;
+	up->scc_genscc.scc_mrblr = 1;
+	up->scc_maxidl = 0;
+	up->scc_brkcr = 1;
+	up->scc_parec = 0;
+	up->scc_frmec = 0;
+	up->scc_nosec = 0;
+	up->scc_brkec = 0;
+	up->scc_uaddr1 = 0;
+	up->scc_uaddr2 = 0;
+	up->scc_toseq = 0;
+	up->scc_char1 = up->scc_char2 = up->scc_char3 = up->scc_char4 = 0x8000;
+	up->scc_char5 = up->scc_char6 = up->scc_char7 = up->scc_char8 = 0x8000;
+	up->scc_rccm = 0xc0ff;
+
+	/* Mask all interrupts and remove anything pending.
+	*/
+	sp->sccm = 0;
+	sp->scce = 0xffff;
+
+	/* Set 8 bit FIFO, 16 bit oversampling and UART mode.
+	*/
+	sp->gsmrh = SCC_GSMRH_RFW;	/* 8 bit FIFO */
+	sp->gsmrl = \
+		SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
+
+	/* Set CTS no flow control, 1 stop bit, 8 bit character length,
+	 * normal async UART mode, no parity
+	 */
+	sp->psmr = SCU_PSMR_CL;
+
+	/* execute the "Init Rx and Tx params" CP command.
+	*/
+
+	while (cp->cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+	  ;
+
+	cp->cpcr = mk_cr_cmd(CPM_CR_SCC_PAGE, CPM_CR_SCC_SBLOCK,
+					0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+	while (cp->cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+	  ;
+
+	/* Enable transmitter/receiver.
+	*/
+	sp->gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
+
+	return (0);
+}
+
+static void mpc85xx_serial_setbrg(void)
+{
+#if defined(CONFIG_CONS_USE_EXTC)
+	m8560_cpm_extcbrg(SCC_INDEX, gd->baudrate,
+		CONFIG_CONS_EXTC_RATE, CONFIG_CONS_EXTC_PINSEL);
+#else
+	m8560_cpm_setbrg(SCC_INDEX, gd->baudrate);
+#endif
+}
+
+static void mpc85xx_serial_putc(const char c)
+{
+	volatile scc_uart_t	*up;
+	volatile cbd_t		*tbdf;
+	volatile ccsr_cpm_t	*cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
+
+	if (c == '\n')
+		serial_putc ('\r');
+
+	up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
+	tbdf = (cbd_t *)&(cpm->im_dprambase[up->scc_genscc.scc_tbase]);
+
+	/* Wait for last character to go.
+	 */
+	while (tbdf->cbd_sc & BD_SC_READY)
+		;
+
+	/* Load the character into the transmit buffer.
+	 */
+	*(volatile char *)tbdf->cbd_bufaddr = c;
+	tbdf->cbd_datlen = 1;
+	tbdf->cbd_sc |= BD_SC_READY;
+}
+
+static int mpc85xx_serial_getc(void)
+{
+	volatile cbd_t		*rbdf;
+	volatile scc_uart_t	*up;
+	volatile ccsr_cpm_t	*cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
+	unsigned char		c;
+
+	up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
+	rbdf = (cbd_t *)&(cpm->im_dprambase[up->scc_genscc.scc_rbase]);
+
+	/* Wait for character to show up.
+	 */
+	while (rbdf->cbd_sc & BD_SC_EMPTY)
+		;
+
+	/* Grab the char and clear the buffer again.
+	 */
+	c = *(volatile unsigned char *)rbdf->cbd_bufaddr;
+	rbdf->cbd_sc |= BD_SC_EMPTY;
+
+	return (c);
+}
+
+static int mpc85xx_serial_tstc(void)
+{
+	volatile cbd_t		*rbdf;
+	volatile scc_uart_t	*up;
+	volatile ccsr_cpm_t	*cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
+
+	up = (scc_uart_t *)&(cpm->im_dprambase[PROFF_SCC]);
+	rbdf = (cbd_t *)&(cpm->im_dprambase[up->scc_genscc.scc_rbase]);
+
+	return ((rbdf->cbd_sc & BD_SC_EMPTY) == 0);
+}
+
+static struct serial_device mpc85xx_serial_drv = {
+	.name	= "mpc85xx_serial",
+	.start	= mpc85xx_serial_init,
+	.stop	= NULL,
+	.setbrg	= mpc85xx_serial_setbrg,
+	.putc	= mpc85xx_serial_putc,
+	.puts	= default_serial_puts,
+	.getc	= mpc85xx_serial_getc,
+	.tstc	= mpc85xx_serial_tstc,
+};
+
+void mpc85xx_serial_initialize(void)
+{
+	serial_register(&mpc85xx_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+	return &mpc85xx_serial_drv;
+}
+#endif	/* CONFIG_CONS_ON_SCC */