From: peng.fan@oss.nxp.com
To: ohad@wizery.com, bjorn.andersson@linaro.org,
mathieu.poirier@linaro.org, o.rempel@pengutronix.de,
robh+dt@kernel.org, devicetree@vger.kernel.org
Cc: shawnguo@kernel.org, s.hauer@pengutronix.de,
kernel@pengutronix.de, festevam@gmail.com,
linux-remoteproc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Peng Fan <peng.fan@nxp.com>
Subject: [PATCH 8/8] remoteproc: imx_rproc: support i.MX8MN/P
Date: Mon, 22 Mar 2021 16:12:43 +0800 [thread overview]
Message-ID: <1616400763-16632-9-git-send-email-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <1616400763-16632-1-git-send-email-peng.fan@oss.nxp.com>
From: Peng Fan <peng.fan@nxp.com>
Add i.MX8MN/P remote processor(Cortex-M7) support, we are using ARM
SMCCC to start/stop M core, not using regmap interface.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/remoteproc/imx_rproc.c | 89 +++++++++++++++++++++++++++++++---
1 file changed, 82 insertions(+), 7 deletions(-)
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 79a6b65d60b6..948139321330 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -3,6 +3,7 @@
* Copyright (c) 2017 Pengutronix, Oleksij Rempel <kernel@pengutronix.de>
*/
+#include <linux/arm-smccc.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/interrupt.h>
@@ -50,6 +51,11 @@
#define IMX_RPROC_MEM_MAX 32
+#define IMX_SIP_RPROC 0xC2000005
+#define IMX_SIP_RPROC_START 0x00
+#define IMX_SIP_RPROC_STARTED 0x01
+#define IMX_SIP_RPROC_STOP 0x02
+
/**
* struct imx_rproc_mem - slim internal memory structure
* @cpu_addr: MPU virtual address of the memory region
@@ -119,6 +125,36 @@ struct imx_rproc {
void __iomem *rsc_table;
};
+static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
+ /* dev addr , sys addr , size , flags */
+ /* ITCM */
+ { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN },
+ /* OCRAM_S */
+ { 0x00180000, 0x00180000, 0x00009000, 0 },
+ /* OCRAM */
+ { 0x00900000, 0x00900000, 0x00020000, 0 },
+ /* OCRAM */
+ { 0x00920000, 0x00920000, 0x00020000, 0 },
+ /* OCRAM */
+ { 0x00940000, 0x00940000, 0x00050000, 0 },
+ /* QSPI Code - alias */
+ { 0x08000000, 0x08000000, 0x08000000, 0 },
+ /* DDR (Code) - alias */
+ { 0x10000000, 0x40000000, 0x0FFE0000, 0 },
+ /* DTCM */
+ { 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
+ /* OCRAM_S - alias */
+ { 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
+ /* OCRAM */
+ { 0x20200000, 0x00900000, 0x00020000, ATT_OWN },
+ /* OCRAM */
+ { 0x20220000, 0x00920000, 0x00020000, ATT_OWN },
+ /* OCRAM */
+ { 0x20240000, 0x00940000, 0x00040000, ATT_OWN },
+ /* DDR (Data) */
+ { 0x40000000, 0x40000000, 0x80000000, 0 },
+};
+
static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
/* dev addr , sys addr , size , flags */
/* TCML - alias */
@@ -205,6 +241,12 @@ static const struct imx_rproc_att imx_rproc_att_imx6sx[] = {
{ 0x80000000, 0x80000000, 0x60000000, 0 },
};
+static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mn = {
+ .att = imx_rproc_att_imx8mn,
+ .att_size = ARRAY_SIZE(imx_rproc_att_imx8mn),
+ .method = IMX_RPROC_SMC,
+};
+
static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mq = {
.src_reg = IMX7D_SRC_SCR,
.src_mask = IMX7D_M4_RST_MASK,
@@ -246,12 +288,24 @@ static int imx_rproc_start(struct rproc *rproc)
struct imx_rproc *priv = rproc->priv;
const struct imx_rproc_dcfg *dcfg = priv->dcfg;
struct device *dev = priv->dev;
+ struct arm_smccc_res res;
int ret;
- ret = regmap_update_bits(priv->regmap, dcfg->src_reg,
- dcfg->src_mask, dcfg->src_start);
+ switch (dcfg->method) {
+ case IMX_RPROC_MMIO:
+ ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask,
+ dcfg->src_start);
+ break;
+ case IMX_RPROC_SMC:
+ arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_START, 0, 0, 0, 0, 0, 0, &res);
+ ret = res.a0;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
if (ret)
- dev_err(dev, "Failed to enable M4!\n");
+ dev_err(dev, "Failed to enable remote cores!\n");
return ret;
}
@@ -261,12 +315,26 @@ static int imx_rproc_stop(struct rproc *rproc)
struct imx_rproc *priv = rproc->priv;
const struct imx_rproc_dcfg *dcfg = priv->dcfg;
struct device *dev = priv->dev;
+ struct arm_smccc_res res;
int ret;
- ret = regmap_update_bits(priv->regmap, dcfg->src_reg,
- dcfg->src_mask, dcfg->src_stop);
+ switch (dcfg->method) {
+ case IMX_RPROC_MMIO:
+ ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask,
+ dcfg->src_stop);
+ break;
+ case IMX_RPROC_SMC:
+ arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STOP, 0, 0, 0, 0, 0, 0, &res);
+ ret = res.a0;
+ if (res.a1)
+ dev_info(dev, "Not in wfi, force stopped\n");
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
if (ret)
- dev_err(dev, "Failed to stop M4!\n");
+ dev_err(dev, "Failed to stop remote cores\n");
if (priv->mode == IMX_RPROC_EARLY_BOOT)
priv->mode = IMX_RPROC_NORMAL;
@@ -591,6 +659,7 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv)
const struct imx_rproc_dcfg *dcfg = priv->dcfg;
struct rproc *rproc = priv->rproc;
struct device *dev = priv->dev;
+ struct arm_smccc_res res;
int ret;
u32 val;
@@ -607,8 +676,12 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv)
priv->mode = IMX_RPROC_NORMAL;
}
- if (dcfg->method == IMX_RPROC_NONE)
+ if (dcfg->method == IMX_RPROC_NONE) {
priv->mode = IMX_RPROC_EARLY_BOOT;
+ } else if (dcfg->method == IMX_RPROC_SMC) {
+ arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STARTED, 0, 0, 0, 0, 0, 0, &res);
+ priv->mode = res.a0 ? IMX_RPROC_EARLY_BOOT : IMX_RPROC_NORMAL;
+ }
if (priv->mode == IMX_RPROC_EARLY_BOOT) {
priv->rproc->state = RPROC_DETACHED;
@@ -750,6 +823,8 @@ static const struct of_device_id imx_rproc_of_match[] = {
{ .compatible = "fsl,imx6sx-cm4", .data = &imx_rproc_cfg_imx6sx },
{ .compatible = "fsl,imx8mq-cm4", .data = &imx_rproc_cfg_imx8mq },
{ .compatible = "fsl,imx8mm-cm4", .data = &imx_rproc_cfg_imx8mq },
+ { .compatible = "fsl,imx8mn-cm7", .data = &imx_rproc_cfg_imx8mn },
+ { .compatible = "fsl,imx8mp-cm7", .data = &imx_rproc_cfg_imx8mn },
{},
};
MODULE_DEVICE_TABLE(of, imx_rproc_of_match);
--
2.30.0
prev parent reply other threads:[~2021-03-22 8:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 8:12 [PATCH 0/8] remoteproc: imx_rproc: support i.MX7ULP/8MN/8MP peng.fan
2021-03-22 8:12 ` [PATCH 1/8] dt-bindings: remoteproc: imx_rproc: add imx,auto-boot property peng.fan
2021-03-27 16:47 ` Rob Herring
2021-03-22 8:12 ` [PATCH 2/8] dt-bindings: remoteproc: imx_rproc: add i.MX7ULP support peng.fan
2021-03-22 8:12 ` [PATCH 3/8] dt-bindings: remoteproc: imx_rproc: support i.MX8MN/P peng.fan
2021-03-27 16:51 ` Rob Herring
2021-03-22 8:12 ` [PATCH 4/8] remoteproc: imx_rproc: make clk optional peng.fan
2021-03-22 8:12 ` [PATCH 5/8] remoteproc: imx_rproc: parse imx,auto-boot peng.fan
2021-03-22 8:12 ` [PATCH 6/8] remoteproc: imx_rproc: initial support for mutilple start/stop method peng.fan
2021-03-22 8:12 ` [PATCH 7/8] remoteproc: imx_rproc: support i.MX7ULP peng.fan
2021-03-22 8:12 ` peng.fan [this message]
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