[U-Boot] [PATCH v3 10/11] cpu: Add MPC83xx CPU driver
Mario Six
mario.six at gdsys.cc
Thu May 24 08:42:08 UTC 2018
Add a CPU driver for the MPC83xx architecture.
Signed-off-by: Mario Six <mario.six at gdsys.cc>
---
v2 -> v3:
* Added driver files to MAINTAINERS
v1 -> v2:
* Removed cpu_print_info
* Fixed CPU info printing
* Removed usage of uclass_{first,next}_device_compat
* Removed printing of reset status
---
MAINTAINERS | 2 +
arch/powerpc/cpu/mpc83xx/cpu.c | 2 +
arch/powerpc/cpu/mpc83xx/cpu_init.c | 2 +
arch/powerpc/include/asm/processor.h | 2 +
drivers/cpu/Kconfig | 7 +
drivers/cpu/Makefile | 1 +
drivers/cpu/mpc83xx_cpu.c | 265 +++++++++++++++++++++++++++++++++++
drivers/cpu/mpc83xx_cpu.h | 172 +++++++++++++++++++++++
include/cpu.h | 1 +
9 files changed, 454 insertions(+)
create mode 100644 drivers/cpu/mpc83xx_cpu.c
create mode 100644 drivers/cpu/mpc83xx_cpu.h
diff --git a/MAINTAINERS b/MAINTAINERS
index f03cfcc73b0..11965be1402 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -475,6 +475,8 @@ F: drivers/clk/mpc83xx_clk.c
F: drivers/clk/mpc83xx_clk.h
F: include/dt-bindings/clk/mpc83xx-clk.h
F: drivers/timer/mpc83xx_timer.c
+F: drivers/cpu/mpc83xx_cpu.c
+F: drivers/cpu/mpc83xx_cpu.h
F: arch/powerpc/cpu/mpc83xx/
F: arch/powerpc/include/asm/arch-mpc83xx/
diff --git a/arch/powerpc/cpu/mpc83xx/cpu.c b/arch/powerpc/cpu/mpc83xx/cpu.c
index ffb42415feb..b29f271e9bc 100644
--- a/arch/powerpc/cpu/mpc83xx/cpu.c
+++ b/arch/powerpc/cpu/mpc83xx/cpu.c
@@ -25,6 +25,7 @@
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_CPU_MPC83XX
int checkcpu(void)
{
volatile immap_t *immr;
@@ -114,6 +115,7 @@ int checkcpu(void)
return 0;
}
+#endif
#ifndef CONFIG_SYSRESET
int
diff --git a/arch/powerpc/cpu/mpc83xx/cpu_init.c b/arch/powerpc/cpu/mpc83xx/cpu_init.c
index fcac9f63a81..1555205e069 100644
--- a/arch/powerpc/cpu/mpc83xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc83xx/cpu_init.c
@@ -464,6 +464,7 @@ static int print_83xx_arb_event(int force)
}
#endif /* CONFIG_DISPLAY_AER_xxxx */
+#ifndef CONFIG_CPU_MPC83XX
/*
* Figure out the cause of the reset
*/
@@ -505,3 +506,4 @@ int prt_83xx_rsr(void)
return 0;
}
+#endif
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 6fbe8c46b31..f97ce48cc27 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -1325,7 +1325,9 @@ void ll_puts(const char *);
/* In misc.c */
void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
+#ifndef CONFIG_CPU_MPC83XX
int prt_83xx_rsr(void);
+#endif
#endif /* ndef ASSEMBLY*/
diff --git a/drivers/cpu/Kconfig b/drivers/cpu/Kconfig
index 0d1424d38e9..d4052005e24 100644
--- a/drivers/cpu/Kconfig
+++ b/drivers/cpu/Kconfig
@@ -6,3 +6,10 @@ config CPU
multiple CPUs, then normally have to be set up in U-Boot so that
they can work correctly in the OS. This provides a framework for
finding out information about available CPUs and making changes.
+
+config CPU_MPC83XX
+ bool "Enable MPC83xx CPU driver"
+ depends on CPU
+ select CLK_MPC83XX
+ help
+ Support CPU cores for SoCs of the MPC83xx series.
diff --git a/drivers/cpu/Makefile b/drivers/cpu/Makefile
index db515f6f177..29d7da42fad 100644
--- a/drivers/cpu/Makefile
+++ b/drivers/cpu/Makefile
@@ -7,3 +7,4 @@
obj-$(CONFIG_CPU) += cpu-uclass.o
obj-$(CONFIG_ARCH_BMIPS) += bmips_cpu.o
+obj-$(CONFIG_CPU_MPC83XX) += mpc83xx_cpu.o
diff --git a/drivers/cpu/mpc83xx_cpu.c b/drivers/cpu/mpc83xx_cpu.c
new file mode 100644
index 00000000000..550a7ad89f1
--- /dev/null
+++ b/drivers/cpu/mpc83xx_cpu.c
@@ -0,0 +1,265 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018
+ * Mario Six, Guntermann & Drunck GmbH, mario.six at gdsys.cc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <cpu.h>
+#include <clk.h>
+#include <asm/immap_83xx.h>
+
+#include "mpc83xx_cpu.h"
+
+struct mpc83xx_cpu_priv {
+ struct mpc83xx_cpu_info info;
+};
+
+int checkcpu(void)
+{
+ struct udevice *cpu;
+
+ for (uclass_first_device(UCLASS_CPU, &cpu);
+ cpu;
+ uclass_next_device(&cpu)) {
+ }
+
+ return 0;
+}
+
+static inline u32 get_spridr(void)
+{
+ immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+
+ return in_be32(&immr->sysconf.spridr);
+}
+
+static inline void determine_family(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+
+ switch ((get_spridr() & 0xFFFE0000) >> 16) {
+ case 0x80B:
+ priv->info.family = FAMILY_831X;
+ break;
+ case 0x806:
+ priv->info.family = FAMILY_832X;
+ break;
+ case 0x803:
+ priv->info.family = FAMILY_834X;
+ break;
+ case 0x804:
+ priv->info.family = FAMILY_836X;
+ break;
+ case 0x80C:
+ priv->info.family = FAMILY_837X;
+ break;
+ default:
+ priv->info.family = FAMILY_UNKNOWN;
+ }
+}
+
+static inline void determine_type(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+
+ switch ((get_spridr() & 0xFFFE0000) >> 16) {
+ case 0x8100:
+ priv->info.type = TYPE_8308;
+ break;
+ case 0x8110:
+ priv->info.type = TYPE_8309;
+ break;
+ case 0x80B2:
+ priv->info.type = TYPE_8311;
+ break;
+ case 0x80B0:
+ priv->info.type = TYPE_8313;
+ break;
+ case 0x80B6:
+ priv->info.type = TYPE_8314;
+ break;
+ case 0x80B4:
+ priv->info.type = TYPE_8315;
+ break;
+ case 0x8066:
+ priv->info.type = TYPE_8321;
+ break;
+ case 0x8062:
+ priv->info.type = TYPE_8323;
+ break;
+ case 0x8036:
+ priv->info.type = TYPE_8343;
+ break;
+ case 0x8032:
+ priv->info.type = TYPE_8347_TBGA;
+ break;
+ case 0x8034:
+ priv->info.type = TYPE_8347_PBGA;
+ break;
+ case 0x8030:
+ priv->info.type = TYPE_8349;
+ break;
+ case 0x804A:
+ priv->info.type = TYPE_8358_TBGA;
+ break;
+ case 0x804E:
+ priv->info.type = TYPE_8358_PBGA;
+ break;
+ case 0x8048:
+ priv->info.type = TYPE_8360;
+ break;
+ case 0x80C6:
+ priv->info.type = TYPE_8377;
+ break;
+ case 0x80C4:
+ priv->info.type = TYPE_8378;
+ break;
+ case 0x80C2:
+ priv->info.type = TYPE_8379;
+ break;
+ default:
+ priv->info.type = TYPE_UNKNOWN;
+ }
+}
+
+static inline void determine_e300_type(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+ u32 pvr = get_pvr();
+
+ switch (pvr & 0xffff0000) {
+ case 0x80830000:
+ priv->info.e300_type = E300C1;
+ break;
+ case 0x80840000:
+ priv->info.e300_type = E300C2;
+ break;
+ case 0x80850000:
+ priv->info.e300_type = E300C3;
+ break;
+ case 0x80860000:
+ priv->info.e300_type = E300C4;
+ break;
+ default:
+ priv->info.e300_type = E300_UNKNOWN;
+ }
+}
+
+static inline void determine_revid_other(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+ u32 spridr = get_spridr();
+
+ priv->info.revid.major = (spridr & 0x000000F0) >> 4;
+ priv->info.revid.minor = spridr & 0x0000000F;
+}
+
+static inline void determine_revid_mpc834x(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+ u32 spridr = get_spridr();
+
+ priv->info.revid.major = (spridr & 0x0000FF00) >> 8;
+ priv->info.revid.minor = spridr & 0x000000FF;
+}
+
+static void determine_cpu_data(struct udevice *dev)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+ u32 spridr = get_spridr();
+
+ determine_family(dev);
+ determine_type(dev);
+ determine_e300_type(dev);
+
+ if (priv->info.family == FAMILY_834X)
+ determine_revid_mpc834x(dev);
+ else
+ determine_revid_other(dev);
+
+ if ((priv->info.family == FAMILY_834X ||
+ priv->info.family == FAMILY_836X) && priv->info.revid.major >= 2)
+ priv->info.is_a_variant = true;
+
+ priv->info.is_e_processor = !(spridr & 0x00010000);
+}
+
+static int mpc83xx_cpu_get_desc(struct udevice *dev, char *buf, int size)
+{
+ struct mpc83xx_cpu_priv *priv = dev_get_priv(dev);
+ struct clk core_clk;
+ struct clk csb_clk;
+ char core_freq[32];
+ char csb_freq[32];
+
+ clk_get_by_index(dev, 0, &core_clk);
+ clk_get_by_index(dev, 1, &csb_clk);
+
+ determine_cpu_data(dev);
+
+ snprintf(buf, size, "CPU: %s, MPC%s%s%s, Rev: %d.%d at %s MHz, CSB: %s MHz\n",
+ e300_names[priv->info.e300_type],
+ cpu_type_names[priv->info.type],
+ priv->info.is_e_processor ? "E" : "",
+ priv->info.is_a_variant ? "A" : "",
+ priv->info.revid.major,
+ priv->info.revid.minor,
+ strmhz(core_freq, clk_get_rate(&core_clk)),
+ strmhz(csb_freq, clk_get_rate(&csb_clk)));
+
+ return 0;
+}
+
+static int mpc83xx_cpu_get_info(struct udevice *dev, struct cpu_info *info)
+{
+ struct clk clock;
+
+ clk_get_by_index(dev, 0, &clock);
+
+ info->cpu_freq = clk_get_rate(&clock);
+ info->features = BIT(CPU_FEAT_L1_CACHE) | BIT(CPU_FEAT_MMU);
+
+ return 0;
+}
+
+static int mpc83xx_cpu_get_count(struct udevice *dev)
+{
+ /* TODO(mario.six at gdsys.cc): Replace this with real number of cores */
+ return 1;
+}
+
+static int mpc83xx_cpu_get_vendor(struct udevice *dev, char *buf, int size)
+{
+ snprintf(buf, size, "NXP");
+
+ return 0;
+}
+
+static const struct cpu_ops mpc83xx_cpu_ops = {
+ .get_desc = mpc83xx_cpu_get_desc,
+ .get_info = mpc83xx_cpu_get_info,
+ .get_count = mpc83xx_cpu_get_count,
+ .get_vendor = mpc83xx_cpu_get_vendor,
+};
+
+int mpc83xx_cpu_probe(struct udevice *dev)
+{
+ return 0;
+}
+
+static const struct udevice_id mpc83xx_cpu_ids[] = {
+ { .compatible = "fsl,mpc8308", },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(mpc83xx_cpu) = {
+ .name = "mpc83xx_cpu",
+ .id = UCLASS_CPU,
+ .of_match = mpc83xx_cpu_ids,
+ .probe = mpc83xx_cpu_probe,
+ .priv_auto_alloc_size = sizeof(struct mpc83xx_cpu_priv),
+ .ops = &mpc83xx_cpu_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
diff --git a/drivers/cpu/mpc83xx_cpu.h b/drivers/cpu/mpc83xx_cpu.h
new file mode 100644
index 00000000000..0f9926d1877
--- /dev/null
+++ b/drivers/cpu/mpc83xx_cpu.h
@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018
+ * Mario Six, Guntermann & Drunck GmbH, mario.six at gdsys.cc
+ */
+
+#ifndef _MPC83XX_CPU_H_
+#define _MPC83XX_CPU_H_
+
+enum e300_type {
+ E300C1,
+ E300C2,
+ E300C3,
+ E300C4,
+ E300_UNKNOWN,
+};
+
+static const char * const e300_names[] = {
+ [E300C1] = "e300c1",
+ [E300C2] = "e300c2",
+ [E300C3] = "e300c3",
+ [E300C4] = "e300c4",
+ [E300_UNKNOWN] = "Unknown e300",
+};
+
+enum mpc83xx_cpu_family {
+ FAMILY_831X,
+ FAMILY_832X,
+ FAMILY_834X,
+ FAMILY_836X,
+ FAMILY_837X,
+ FAMILY_UNKNOWN,
+};
+
+enum mpc83xx_cpu_type {
+ TYPE_8308,
+ TYPE_8309,
+ TYPE_8311,
+ TYPE_8313,
+ TYPE_8314,
+ TYPE_8315,
+ TYPE_8321,
+ TYPE_8323,
+ TYPE_8343,
+ TYPE_8347_TBGA,
+ TYPE_8347_PBGA,
+ TYPE_8349,
+ TYPE_8358_TBGA,
+ TYPE_8358_PBGA,
+ TYPE_8360,
+ TYPE_8377,
+ TYPE_8378,
+ TYPE_8379,
+ TYPE_UNKNOWN,
+};
+
+static const char * const cpu_type_names[] = {
+ [TYPE_8308] = "8308",
+ [TYPE_8309] = "8309",
+ [TYPE_8311] = "8311",
+ [TYPE_8313] = "8313",
+ [TYPE_8314] = "8314",
+ [TYPE_8315] = "8315",
+ [TYPE_8321] = "8321",
+ [TYPE_8323] = "8323",
+ [TYPE_8343] = "8343",
+ [TYPE_8347_TBGA] = "8347_TBGA",
+ [TYPE_8347_PBGA] = "8347_PBGA",
+ [TYPE_8349] = "8349",
+ [TYPE_8358_TBGA] = "8358_TBGA",
+ [TYPE_8358_PBGA] = "8358_PBGA",
+ [TYPE_8360] = "8360",
+ [TYPE_8377] = "8377",
+ [TYPE_8378] = "8378",
+ [TYPE_8379] = "8379",
+ [TYPE_UNKNOWN] = "Unknown CPU",
+};
+
+struct mpc83xx_cpu_info {
+ enum e300_type e300_type;
+ enum mpc83xx_cpu_family family;
+ enum mpc83xx_cpu_type type;
+ bool is_e_processor;
+ bool is_a_variant;
+ struct {
+ uint major;
+ uint minor;
+ } revid;
+};
+
+static const char * const event[] = {
+ "Address Time Out",
+ "Data Time Out",
+ "Address Only Transfer Type",
+ "External Control Word Transfer Type",
+ "Reserved Transfer Type",
+ "Transfer Error",
+ "reserved",
+ "reserved"
+};
+
+static const char * const master[] = {
+ "e300 Core Data Transaction",
+ "reserved",
+ "e300 Core Instruction Fetch",
+ "reserved",
+ "TSEC1",
+ "TSEC2",
+ "USB MPH",
+ "USB DR",
+ "Encryption Core",
+ "I2C Boot Sequencer",
+ "JTAG",
+ "reserved",
+ "eSDHC",
+ "PCI1",
+ "PCI2",
+ "DMA",
+ "QUICC Engine 00",
+ "QUICC Engine 01",
+ "QUICC Engine 10",
+ "QUICC Engine 11",
+ "reserved",
+ "reserved",
+ "reserved",
+ "reserved",
+ "SATA1",
+ "SATA2",
+ "SATA3",
+ "SATA4",
+ "reserved",
+ "PCI Express 1",
+ "PCI Express 2",
+ "TDM-DMAC"
+};
+
+static const char * const transfer[] = {
+ "Address-only, Clean Block",
+ "Address-only, lwarx reservation set",
+ "Single-beat or Burst write",
+ "reserved",
+ "Address-only, Flush Block",
+ "reserved",
+ "Burst write",
+ "reserved",
+ "Address-only, sync",
+ "Address-only, tlbsync",
+ "Single-beat or Burst read",
+ "Single-beat or Burst read",
+ "Address-only, Kill Block",
+ "Address-only, icbi",
+ "Burst read",
+ "reserved",
+ "Address-only, eieio",
+ "reserved",
+ "Single-beat write",
+ "reserved",
+ "ecowx - Illegal single-beat write",
+ "reserved",
+ "reserved",
+ "reserved",
+ "Address-only, TLB Invalidate",
+ "reserved",
+ "Single-beat or Burst read",
+ "reserved",
+ "eciwx - Illegal single-beat read",
+ "reserved",
+ "Burst read",
+ "reserved"
+};
+
+#endif /* !_MPC83XX_CPU_H_ */
diff --git a/include/cpu.h b/include/cpu.h
index 5cc7c5abd72..e1de356b543 100644
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -43,6 +43,7 @@ enum {
struct cpu_info {
ulong cpu_freq;
ulong features;
+ void *specific_info;
};
struct cpu_ops {
--
2.11.0
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