1 files changed, 481 insertions, 0 deletions
diff --git a/u-boot/drivers/qe/qe.c b/u-boot/drivers/qe/qe.c
new file mode 100644
index 0000000..c4ec2f4
--- /dev/null
+++ b/u-boot/drivers/qe/qe.c
@@ -0,0 +1,481 @@
+/*
+ * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.com>
+ * based on source code of Shlomi Gridish
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include "common.h"
+#include <command.h>
+#include "asm/errno.h"
+#include "asm/io.h"
+#include "asm/immap_qe.h"
+#include "qe.h"
+
+qe_map_t		*qe_immr = NULL;
+static qe_snum_t	snums[QE_NUM_OF_SNUM];
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void qe_issue_cmd(uint cmd, uint sbc, u8 mcn, u32 cmd_data)
+{
+	u32 cecr;
+
+	if (cmd == QE_RESET) {
+		out_be32(&qe_immr->cp.cecr,(u32) (cmd | QE_CR_FLG));
+	} else {
+		out_be32(&qe_immr->cp.cecdr, cmd_data);
+		out_be32(&qe_immr->cp.cecr, (sbc | QE_CR_FLG |
+			 ((u32) mcn<<QE_CR_PROTOCOL_SHIFT) | cmd));
+	}
+	/* Wait for the QE_CR_FLG to clear */
+	do {
+		cecr = in_be32(&qe_immr->cp.cecr);
+	} while (cecr & QE_CR_FLG);
+
+	return;
+}
+
+uint qe_muram_alloc(uint size, uint align)
+{
+	uint	retloc;
+	uint	align_mask, off;
+	uint	savebase;
+
+	align_mask = align - 1;
+	savebase = gd->mp_alloc_base;
+
+	if ((off = (gd->mp_alloc_base & align_mask)) != 0)
+		gd->mp_alloc_base += (align - off);
+
+	if ((off = size & align_mask) != 0)
+		size += (align - off);
+
+	if ((gd->mp_alloc_base + size) >= gd->mp_alloc_top) {
+		gd->mp_alloc_base = savebase;
+		printf("%s: ran out of ram.\n",  __FUNCTION__);
+	}
+
+	retloc = gd->mp_alloc_base;
+	gd->mp_alloc_base += size;
+
+	memset((void *)&qe_immr->muram[retloc], 0, size);
+
+	__asm__ __volatile__("sync");
+
+	return retloc;
+}
+
+void *qe_muram_addr(uint offset)
+{
+	return (void *)&qe_immr->muram[offset];
+}
+
+static void qe_sdma_init(void)
+{
+	volatile sdma_t	*p;
+	uint		sdma_buffer_base;
+
+	p = (volatile sdma_t *)&qe_immr->sdma;
+
+	/* All of DMA transaction in bus 1 */
+	out_be32(&p->sdaqr, 0);
+	out_be32(&p->sdaqmr, 0);
+
+	/* Allocate 2KB temporary buffer for sdma */
+	sdma_buffer_base = qe_muram_alloc(2048, 4096);
+	out_be32(&p->sdwbcr, sdma_buffer_base & QE_SDEBCR_BA_MASK);
+
+	/* Clear sdma status */
+	out_be32(&p->sdsr, 0x03000000);
+
+	/* Enable global mode on bus 1, and 2KB buffer size */
+	out_be32(&p->sdmr, QE_SDMR_GLB_1_MSK | (0x3 << QE_SDMR_CEN_SHIFT));
+}
+
+/* This table is a list of the serial numbers of the Threads, taken from the
+ * "SNUM Table" chart in the QE Reference Manual. The order is not important,
+ * we just need to know what the SNUMs are for the threads.
+ */
+static u8 thread_snum[] = {
+	0x04, 0x05, 0x0c, 0x0d,
+	0x14, 0x15, 0x1c, 0x1d,
+	0x24, 0x25, 0x2c, 0x2d,
+	0x34, 0x35, 0x88, 0x89,
+	0x98, 0x99, 0xa8, 0xa9,
+	0xb8, 0xb9, 0xc8, 0xc9,
+	0xd8, 0xd9, 0xe8, 0xe9,
+	0x08, 0x09, 0x18, 0x19,
+	0x28, 0x29, 0x38, 0x39,
+	0x48, 0x49, 0x58, 0x59,
+	0x68, 0x69, 0x78, 0x79,
+	0x80, 0x81
+};
+
+static void qe_snums_init(void)
+{
+	int	i;
+
+	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
+		snums[i].state = QE_SNUM_STATE_FREE;
+		snums[i].num   = thread_snum[i];
+	}
+}
+
+int qe_get_snum(void)
+{
+	int	snum = -EBUSY;
+	int	i;
+
+	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
+		if (snums[i].state == QE_SNUM_STATE_FREE) {
+			snums[i].state = QE_SNUM_STATE_USED;
+			snum = snums[i].num;
+			break;
+		}
+	}
+
+	return snum;
+}
+
+void qe_put_snum(u8 snum)
+{
+	int	i;
+
+	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
+		if (snums[i].num == snum) {
+			snums[i].state = QE_SNUM_STATE_FREE;
+			break;
+		}
+	}
+}
+
+void qe_init(uint qe_base)
+{
+	/* Init the QE IMMR base */
+	qe_immr = (qe_map_t *)qe_base;
+
+#ifdef CONFIG_SYS_QE_FW_ADDR
+	/*
+	 * Upload microcode to IRAM for those SOCs which do not have ROM in QE.
+	 */
+	qe_upload_firmware((const struct qe_firmware *) CONFIG_SYS_QE_FW_ADDR);
+
+	/* enable the microcode in IRAM */
+	out_be32(&qe_immr->iram.iready,QE_IRAM_READY);
+#endif
+
+	gd->mp_alloc_base = QE_DATAONLY_BASE;
+	gd->mp_alloc_top = gd->mp_alloc_base + QE_DATAONLY_SIZE;
+
+	qe_sdma_init();
+	qe_snums_init();
+}
+
+void qe_reset(void)
+{
+	qe_issue_cmd(QE_RESET, QE_CR_SUBBLOCK_INVALID,
+			 (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
+}
+
+void qe_assign_page(uint snum, uint para_ram_base)
+{
+	u32	cecr;
+
+	out_be32(&qe_immr->cp.cecdr, para_ram_base);
+	out_be32(&qe_immr->cp.cecr, ((u32) snum<<QE_CR_ASSIGN_PAGE_SNUM_SHIFT)
+					 | QE_CR_FLG | QE_ASSIGN_PAGE);
+
+	/* Wait for the QE_CR_FLG to clear */
+	do {
+		cecr = in_be32(&qe_immr->cp.cecr);
+	} while (cecr & QE_CR_FLG );
+
+	return;
+}
+
+/*
+ * brg: 0~15 as BRG1~BRG16
+   rate: baud rate
+ * BRG input clock comes from the BRGCLK (internal clock generated from
+   the QE clock, it is one-half of the QE clock), If need the clock source
+   from CLKn pin, we have te change the function.
+ */
+
+#define BRG_CLK		(gd->brg_clk)
+
+int qe_set_brg(uint brg, uint rate)
+{
+	volatile uint	*bp;
+	u32		divisor;
+	int		div16 = 0;
+
+	if (brg >= QE_NUM_OF_BRGS)
+		return -EINVAL;
+	bp = (uint *)&qe_immr->brg.brgc1;
+	bp += brg;
+
+	divisor = (BRG_CLK / rate);
+	if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
+		div16 = 1;
+		divisor /= 16;
+	}
+
+	*bp = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) | QE_BRGC_ENABLE;
+	__asm__ __volatile__("sync");
+
+	if (div16) {
+		*bp |= QE_BRGC_DIV16;
+		__asm__ __volatile__("sync");
+	}
+
+	return 0;
+}
+
+/* Set ethernet MII clock master
+*/
+int qe_set_mii_clk_src(int ucc_num)
+{
+	u32	cmxgcr;
+
+	/* check if the UCC number is in range. */
+	if ((ucc_num > UCC_MAX_NUM - 1) || (ucc_num < 0)) {
+		printf("%s: ucc num not in ranges\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	cmxgcr = in_be32(&qe_immr->qmx.cmxgcr);
+	cmxgcr &= ~QE_CMXGCR_MII_ENET_MNG_MASK;
+	cmxgcr |= (ucc_num <<QE_CMXGCR_MII_ENET_MNG_SHIFT);
+	out_be32(&qe_immr->qmx.cmxgcr, cmxgcr);
+
+	return 0;
+}
+
+/* Firmware information stored here for qe_get_firmware_info() */
+static struct qe_firmware_info qe_firmware_info;
+
+/*
+ * Set to 1 if QE firmware has been uploaded, and therefore
+ * qe_firmware_info contains valid data.
+ */
+static int qe_firmware_uploaded;
+
+/*
+ * Upload a QE microcode
+ *
+ * This function is a worker function for qe_upload_firmware().  It does
+ * the actual uploading of the microcode.
+ */
+static void qe_upload_microcode(const void *base,
+	const struct qe_microcode *ucode)
+{
+	const u32 *code = base + be32_to_cpu(ucode->code_offset);
+	unsigned int i;
+
+	if (ucode->major || ucode->minor || ucode->revision)
+		printf("QE: uploading microcode '%s' version %u.%u.%u\n",
+			ucode->id, ucode->major, ucode->minor, ucode->revision);
+	else
+		printf("QE: uploading microcode '%s'\n", ucode->id);
+
+	/* Use auto-increment */
+	out_be32(&qe_immr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
+		QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);
+
+	for (i = 0; i < be32_to_cpu(ucode->count); i++)
+		out_be32(&qe_immr->iram.idata, be32_to_cpu(code[i]));
+}
+
+/*
+ * Upload a microcode to the I-RAM at a specific address.
+ *
+ * See docs/README.qe_firmware for information on QE microcode uploading.
+ *
+ * Currently, only version 1 is supported, so the 'version' field must be
+ * set to 1.
+ *
+ * The SOC model and revision are not validated, they are only displayed for
+ * informational purposes.
+ *
+ * 'calc_size' is the calculated size, in bytes, of the firmware structure and
+ * all of the microcode structures, minus the CRC.
+ *
+ * 'length' is the size that the structure says it is, including the CRC.
+ */
+int qe_upload_firmware(const struct qe_firmware *firmware)
+{
+	unsigned int i;
+	unsigned int j;
+	u32 crc;
+	size_t calc_size = sizeof(struct qe_firmware);
+	size_t length;
+	const struct qe_header *hdr;
+
+	if (!firmware) {
+		printf("Invalid address\n");
+		return -EINVAL;
+	}
+
+	hdr = &firmware->header;
+	length = be32_to_cpu(hdr->length);
+
+	/* Check the magic */
+	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
+	    (hdr->magic[2] != 'F')) {
+		printf("Not a microcode\n");
+		return -EPERM;
+	}
+
+	/* Check the version */
+	if (hdr->version != 1) {
+		printf("Unsupported version\n");
+		return -EPERM;
+	}
+
+	/* Validate some of the fields */
+	if ((firmware->count < 1) || (firmware->count > MAX_QE_RISC)) {
+		printf("Invalid data\n");
+		return -EINVAL;
+	}
+
+	/* Validate the length and check if there's a CRC */
+	calc_size += (firmware->count - 1) * sizeof(struct qe_microcode);
+
+	for (i = 0; i < firmware->count; i++)
+		/*
+		 * For situations where the second RISC uses the same microcode
+		 * as the first, the 'code_offset' and 'count' fields will be
+		 * zero, so it's okay to add those.
+		 */
+		calc_size += sizeof(u32) *
+			be32_to_cpu(firmware->microcode[i].count);
+
+	/* Validate the length */
+	if (length != calc_size + sizeof(u32)) {
+		printf("Invalid length\n");
+		return -EPERM;
+	}
+
+	/*
+	 * Validate the CRC.  We would normally call crc32_no_comp(), but that
+	 * function isn't available unless you turn on JFFS support.
+	 */
+	crc = be32_to_cpu(*(u32 *)((void *)firmware + calc_size));
+	if (crc != (crc32(-1, (const void *) firmware, calc_size) ^ -1)) {
+		printf("Firmware CRC is invalid\n");
+		return -EIO;
+	}
+
+	/*
+	 * If the microcode calls for it, split the I-RAM.
+	 */
+	if (!firmware->split) {
+		out_be16(&qe_immr->cp.cercr,
+			in_be16(&qe_immr->cp.cercr) | QE_CP_CERCR_CIR);
+	}
+
+	if (firmware->soc.model)
+		printf("Firmware '%s' for %u V%u.%u\n",
+			firmware->id, be16_to_cpu(firmware->soc.model),
+			firmware->soc.major, firmware->soc.minor);
+	else
+		printf("Firmware '%s'\n", firmware->id);
+
+	/*
+	 * The QE only supports one microcode per RISC, so clear out all the
+	 * saved microcode information and put in the new.
+	 */
+	memset(&qe_firmware_info, 0, sizeof(qe_firmware_info));
+	strcpy(qe_firmware_info.id, (char *)firmware->id);
+	qe_firmware_info.extended_modes = firmware->extended_modes;
+	memcpy(qe_firmware_info.vtraps, firmware->vtraps,
+		sizeof(firmware->vtraps));
+	qe_firmware_uploaded = 1;
+
+	/* Loop through each microcode. */
+	for (i = 0; i < firmware->count; i++) {
+		const struct qe_microcode *ucode = &firmware->microcode[i];
+
+		/* Upload a microcode if it's present */
+		if (ucode->code_offset)
+			qe_upload_microcode(firmware, ucode);
+
+		/* Program the traps for this processor */
+		for (j = 0; j < 16; j++) {
+			u32 trap = be32_to_cpu(ucode->traps[j]);
+
+			if (trap)
+				out_be32(&qe_immr->rsp[i].tibcr[j], trap);
+		}
+
+		/* Enable traps */
+		out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
+	}
+
+	return 0;
+}
+
+struct qe_firmware_info *qe_get_firmware_info(void)
+{
+	return qe_firmware_uploaded ? &qe_firmware_info : NULL;
+}
+
+static int qe_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	ulong addr;
+
+	if (argc < 3)
+		return cmd_usage(cmdtp);
+
+	if (strcmp(argv[1], "fw") == 0) {
+		addr = simple_strtoul(argv[2], NULL, 16);
+
+		if (!addr) {
+			printf("Invalid address\n");
+			return -EINVAL;
+		}
+
+		/*
+		 * If a length was supplied, compare that with the 'length'
+		 * field.
+		 */
+
+		if (argc > 3) {
+			ulong length = simple_strtoul(argv[3], NULL, 16);
+			struct qe_firmware *firmware = (void *) addr;
+
+			if (length != be32_to_cpu(firmware->header.length)) {
+				printf("Length mismatch\n");
+				return -EINVAL;
+			}
+		}
+
+		return qe_upload_firmware((const struct qe_firmware *) addr);
+	}
+
+	return cmd_usage(cmdtp);
+}
+
+U_BOOT_CMD(
+	qe, 4, 0, qe_cmd,
+	"QUICC Engine commands",
+	"fw <addr> [<length>] - Upload firmware binary at address <addr> to "
+		"the QE,\n"
+	"\twith optional length <length> verification."
+);