[coreboot-gerrit] Change in coreboot[master]: soc/mediatek/mt8192: devapc: add basic dapc drivers

[Yidi Lin (Code Review)]

Yidi Lin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46402 )

Change subject: soc/mediatek/mt8192: devapc: add basic dapc drivers
......................................................................

soc/mediatek/mt8192: devapc: add basic dapc drivers

Add basic dapc drivers:
1. init dapc
2. set CPUEB to secure sideband

Change-Id: I2ad47c86b88047c76854a6f8a67b251b6a9d4013
Signed-off-by: Nina Wu 
---
M src/soc/mediatek/mt8192/Makefile.inc
A src/soc/mediatek/mt8192/devapc.c
M src/soc/mediatek/mt8192/include/soc/addressmap.h
A src/soc/mediatek/mt8192/include/soc/devapc.h
M src/soc/mediatek/mt8192/soc.c
5 files changed, 54 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/46402/1

diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc
index 5609a06..4ce5e6a 100755
--- a/src/soc/mediatek/mt8192/Makefile.inc
+++ b/src/soc/mediatek/mt8192/Makefile.inc
@@ -47,6 +47,7 @@
 ramstage-y += ../common/mmu_operations.c mmu_operations.c
 ramstage-y += ../common/mtcmos.c mtcmos.c
 ramstage-y += soc.c
+ramstage-y += devapc.c
 ramstage-y += mcupm.c
 ramstage-y += ../common/timer.c
 ramstage-y += ../common/uart.c
diff --git a/src/soc/mediatek/mt8192/devapc.c b/src/soc/mediatek/mt8192/devapc.c
new file mode 100644
index 0000000..96a2a01
--- /dev/null
+++ b/src/soc/mediatek/mt8192/devapc.c
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <soc/devapc.h>
+
+static unsigned long devapc_ao_base = (unsigned long)DEVAPC_INFRA_AO_BASE;
+
+static void master_sec_init(void)
+{
+	unsigned int val = 0;
+
+	SET32_BITFIELDS(&val, CPU_EB_SEC, 1);
+
+	write32((void*)MAS_SEC, val);
+
+	if (read32((const void*)MAS_SEC) != val)
+		printk(BIOS_ERR, "[DEVAPC] %s: FAILED to set INFRA MAS_SEC\n", __func__);
+	else
+		printk(BIOS_INFO, "[DEVAPC] %s: INFRA MAS_SEC is set to 0x%x\n", __func__, val);
+}
+
+void dapc_init(void)
+{
+	/* Init dapc */
+	write32((void*)AO_APC_CON, 0x1);
+
+	/* Init master sideband */
+	master_sec_init();
+}
diff --git a/src/soc/mediatek/mt8192/include/soc/addressmap.h b/src/soc/mediatek/mt8192/include/soc/addressmap.h
index bd9b755..19728a3 100644
--- a/src/soc/mediatek/mt8192/include/soc/addressmap.h
+++ b/src/soc/mediatek/mt8192/include/soc/addressmap.h
@@ -60,6 +60,7 @@
    IOCFG_TL_BASE		= IO_PHYS + 0x01F30000,
    MSDC0_TOP_BASE		= IO_PHYS + 0x01F50000,
    MSDC0_BASE		= IO_PHYS + 0x01F60000,
+	DEVAPC_INFRA_AO_BASE		= IO_PHYS + 0x00030000,
 };

#endif
diff --git a/src/soc/mediatek/mt8192/include/soc/devapc.h b/src/soc/mediatek/mt8192/include/soc/devapc.h
new file mode 100644
index 0000000..0cd67d3
--- /dev/null
+++ b/src/soc/mediatek/mt8192/include/soc/devapc.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_MEDIATEK_MT8192_DEVAPC_H
+#define SOC_MEDIATEK_MT8192_DEVAPC_H
+
+#include <device/mmio.h>
+#include <soc/addressmap.h>
+
+void dapc_init(void);
+
+enum devapc_ao_offset {
+	OFF_AO_APC_CON = 0x0F00,
+	OFF_MAS_SEC_0 = 0x0A00,
+};
+
+#define AO_APC_CON (devapc_ao_base + (unsigned long)OFF_AO_APC_CON)
+#define MAS_SEC    (devapc_ao_base + (unsigned long)OFF_MAS_SEC_0)
+
+DEFINE_BIT(CPU_EB_SEC, 4)
+
+#endif /* SOC_MEDIATEK_MT8192_DEVAPC_H */
diff --git a/src/soc/mediatek/mt8192/soc.c b/src/soc/mediatek/mt8192/soc.c
index 6deb833..ba153f2 100644
--- a/src/soc/mediatek/mt8192/soc.c
+++ b/src/soc/mediatek/mt8192/soc.c
@@ -4,6 +4,7 @@
 #include <soc/emi.h>
 #include <soc/mmu_operations.h>
 #include <symbols.h>
+#include <soc/devapc.h>
 #include <soc/mcupm.h>

static void soc_read_resources(struct device *dev)
@@ -14,6 +15,7 @@
 static void soc_init(struct device *dev)
 {
    mtk_mmu_disable_l2c_sram();
+	dapc_init();
     mcupm_init();
 }