platform: generic: Move Sifive platform overrides into own directory

Let us move SiFive platform overrides for FU540 and FU740 into a separate
directory so better maintainability. Other SoC vendors can also create
their own directory under platform/generic.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>

1 files changed, 0 insertions, 256 deletions

diff --git a/platform/generic/sifive_fu740.c b/platform/generic/sifive_fu740.c
deleted file mode 100644
index f595c04..0000000
--- a/platform/generic/sifive_fu740.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2021 SiFive
- * Copyright (c) 2021 YADRO
- *
- * Authors:
- *   David Abdurachmanov <david.abdurachmanov@sifive.com>
- *   Nikita Shubin <n.shubin@yadro.com>
- */
-
-#include <platform_override.h>
-#include <libfdt.h>
-#include <sbi/sbi_error.h>
-#include <sbi/sbi_hart.h>
-#include <sbi/sbi_system.h>
-#include <sbi/sbi_console.h>
-#include <sbi_utils/fdt/fdt_helper.h>
-#include <sbi_utils/fdt/fdt_fixup.h>
-#include <sbi_utils/reset/fdt_reset.h>
-#include <sbi_utils/i2c/fdt_i2c.h>
-
-#define DA9063_REG_PAGE_CON		0x00
-#define DA9063_REG_CONTROL_A		0x0e
-#define DA9063_REG_CONTROL_D		0x11
-#define DA9063_REG_CONTROL_F		0x13
-#define DA9063_REG_DEVICE_ID		0x81
-
-#define DA9063_CONTROL_A_M_POWER1_EN	(1 << 6)
-#define DA9063_CONTROL_A_M_POWER_EN	(1 << 5)
-#define DA9063_CONTROL_A_STANDBY	(1 << 3)
-
-#define DA9063_CONTROL_D_TWDSCALE_MASK	0x07
-
-#define DA9063_CONTROL_F_WAKEUP	(1 << 2)
-#define DA9063_CONTROL_F_SHUTDOWN	(1 << 1)
-
-#define PMIC_CHIP_ID_DA9063		0x61
-
-static struct {
-	struct i2c_adapter *adapter;
-	uint32_t reg;
-} da9063;
-
-static int da9063_system_reset_check(u32 type, u32 reason)
-{
-	switch (type) {
-	case SBI_SRST_RESET_TYPE_SHUTDOWN:
-		return 1;
-	case SBI_SRST_RESET_TYPE_COLD_REBOOT:
-	case SBI_SRST_RESET_TYPE_WARM_REBOOT:
-		return 255;
-	}
-
-	return 0;
-}
-
-static inline int da9063_sanity_check(struct i2c_adapter *adap, uint32_t reg)
-{
-	uint8_t val;
-	int rc = i2c_adapter_reg_write(adap, reg, DA9063_REG_PAGE_CON, 0x02);
-
-	if (rc)
-		return rc;
-
-	/* check set page*/
-	rc = i2c_adapter_reg_read(adap, reg, 0x0, &val);
-	if (rc)
-		return rc;
-
-	if (val != 0x02)
-		return SBI_ENODEV;
-
-	/* read and check device id */
-	rc = i2c_adapter_reg_read(adap, reg, DA9063_REG_DEVICE_ID, &val);
-	if (rc)
-		return rc;
-
-	if (val != PMIC_CHIP_ID_DA9063)
-		return SBI_ENODEV;
-
-	return 0;
-}
-
-static inline int da9063_stop_watchdog(struct i2c_adapter *adap, uint32_t reg)
-{
-	uint8_t val;
-	int rc = i2c_adapter_reg_write(adap, reg,
-					DA9063_REG_PAGE_CON, 0x00);
-
-	if (rc)
-		return rc;
-
-	rc = i2c_adapter_reg_read(adap, reg, DA9063_REG_CONTROL_D, &val);
-	if (rc)
-		return rc;
-
-	if ((val & DA9063_CONTROL_D_TWDSCALE_MASK) == 0)
-		return 0;
-
-	val &= ~DA9063_CONTROL_D_TWDSCALE_MASK;
-
-	return i2c_adapter_reg_write(adap, reg, DA9063_REG_CONTROL_D, val);
-}
-
-static inline int da9063_shutdown(struct i2c_adapter *adap, uint32_t reg)
-{
-	int rc = i2c_adapter_reg_write(adap, reg,
-					DA9063_REG_PAGE_CON, 0x00);
-
-	if (rc)
-		return rc;
-
-	return i2c_adapter_reg_write(adap, reg,
-				     DA9063_REG_CONTROL_F,
-				     DA9063_CONTROL_F_SHUTDOWN);
-}
-
-static inline int da9063_reset(struct i2c_adapter *adap, uint32_t reg)
-{
-	int rc = i2c_adapter_reg_write(adap, reg,
-					DA9063_REG_PAGE_CON, 0x00);
-
-	if (rc)
-		return rc;
-
-	rc = i2c_adapter_reg_write(adap, reg,
-				   DA9063_REG_CONTROL_F,
-				   DA9063_CONTROL_F_WAKEUP);
-	if (rc)
-		return rc;
-
-	return i2c_adapter_reg_write(adap, reg,
-				DA9063_REG_CONTROL_A,
-				DA9063_CONTROL_A_M_POWER1_EN |
-				DA9063_CONTROL_A_M_POWER_EN |
-				DA9063_CONTROL_A_STANDBY);
-}
-
-static void da9063_system_reset(u32 type, u32 reason)
-{
-	struct i2c_adapter *adap = da9063.adapter;
-	uint32_t reg = da9063.reg;
-	int rc;
-
-	if (adap) {
-		/* sanity check */
-		rc = da9063_sanity_check(adap, reg);
-		if (rc) {
-			sbi_printf("%s: chip is not da9063 PMIC\n", __func__);
-			goto skip_reset;
-		}
-
-		switch (type) {
-		case SBI_SRST_RESET_TYPE_SHUTDOWN:
-			da9063_shutdown(adap, reg);
-			break;
-		case SBI_SRST_RESET_TYPE_COLD_REBOOT:
-		case SBI_SRST_RESET_TYPE_WARM_REBOOT:
-			da9063_stop_watchdog(adap, reg);
-			da9063_reset(adap, reg);
-			break;
-		}
-	}
-
-skip_reset:
-	sbi_hart_hang();
-}
-
-static struct sbi_system_reset_device da9063_reset_i2c = {
-	.name = "da9063-reset",
-	.system_reset_check = da9063_system_reset_check,
-	.system_reset = da9063_system_reset
-};
-
-static int da9063_reset_init(void *fdt, int nodeoff,
-			     const struct fdt_match *match)
-{
-	int rc, i2c_bus;
-	struct i2c_adapter *adapter;
-	uint64_t addr;
-
-	/* we are dlg,da9063 node */
-	rc = fdt_get_node_addr_size(fdt, nodeoff, 0, &addr, NULL);
-	if (rc)
-		return rc;
-
-	da9063.reg = addr;
-
-	/* find i2c bus parent node */
-	i2c_bus = fdt_parent_offset(fdt, nodeoff);
-	if (i2c_bus < 0)
-		return i2c_bus;
-
-	/* i2c adapter get */
-	rc = fdt_i2c_adapter_get(fdt, i2c_bus, &adapter);
-	if (rc)
-		return rc;
-
-	da9063.adapter = adapter;
-
-	sbi_system_reset_add_device(&da9063_reset_i2c);
-
-	return 0;
-}
-
-static const struct fdt_match da9063_reset_match[] = {
-	{ .compatible = "dlg,da9063", .data = (void *)TRUE },
-	{ },
-};
-
-struct fdt_reset fdt_reset_da9063 = {
-	.match_table = da9063_reset_match,
-	.init = da9063_reset_init,
-};
-
-static u64 sifive_fu740_tlbr_flush_limit(const struct fdt_match *match)
-{
-	/*
-	 * Needed to address CIP-1200 errata on SiFive FU740
-	 * Title: Instruction TLB can fail to respect a non-global SFENCE
-	 * Workaround: Flush the TLB using SFENCE.VMA x0, x0
-	 * See Errata_FU740-C000_20210205 from
-	 * https://www.sifive.com/boards/hifive-unmatched
-	 */
-	return 0;
-}
-
-static int sifive_fu740_final_init(bool cold_boot,
-				   const struct fdt_match *match)
-{
-	int rc;
-	void *fdt = fdt_get_address();
-
-	if (cold_boot) {
-		rc = fdt_reset_driver_init(fdt, &fdt_reset_da9063);
-		if (rc)
-			sbi_printf("%s: failed to find da9063 for reset\n",
-				   __func__);
-	}
-
-	return 0;
-}
-
-static const struct fdt_match sifive_fu740_match[] = {
-	{ .compatible = "sifive,fu740" },
-	{ .compatible = "sifive,fu740-c000" },
-	{ .compatible = "sifive,hifive-unmatched-a00" },
-	{ },
-};
-
-const struct platform_override sifive_fu740 = {
-	.match_table = sifive_fu740_match,
-	.tlbr_flush_limit = sifive_fu740_tlbr_flush_limit,
-	.final_init = sifive_fu740_final_init,
-};