From: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx>
The security accelerator which can act as a puppet player for the crypto
engine requires its commands in the sram. This patch adds support for the
phys mapping and creates a platform device the actual driver.
Signed-off-by: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx>
---
arch/arm/mach-orion5x/addr-map.c | 14 ++++++++-
arch/arm/mach-orion5x/common.c | 36 ++++++++++++++++++++++++++
arch/arm/mach-orion5x/common.h | 2 +
arch/arm/mach-orion5x/include/mach/orion5x.h | 6 ++++
4 files changed, 56 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-orion5x/addr-map.c b/arch/arm/mach-orion5x/addr-map.c
index c14d121..d78731e 100644
--- a/arch/arm/mach-orion5x/addr-map.c
+++ b/arch/arm/mach-orion5x/addr-map.c
@@ -14,6 +14,7 @@
#include <linux/init.h>
#include <linux/mbus.h>
#include <linux/io.h>
+#include <linux/errno.h>
#include <mach/hardware.h>
#include "common.h"
@@ -44,6 +45,7 @@
#define TARGET_DEV_BUS 1
#define TARGET_PCI 3
#define TARGET_PCIE 4
+#define TARGET_SRAM 9
#define ATTR_PCIE_MEM 0x59
#define ATTR_PCIE_IO 0x51
#define ATTR_PCIE_WA 0x79
@@ -53,6 +55,7 @@
#define ATTR_DEV_CS1 0x1d
#define ATTR_DEV_CS2 0x1b
#define ATTR_DEV_BOOT 0xf
+#define ATTR_SRAM 0x0
/*
* Helpers to get DDR bank info
@@ -87,13 +90,13 @@ static int __init orion5x_cpu_win_can_remap(int win)
return 0;
}
-static void __init setup_cpu_win(int win, u32 base, u32 size,
+static int __init setup_cpu_win(int win, u32 base, u32 size,
u8 target, u8 attr, int remap)
{
if (win >= 8) {
printk(KERN_ERR "setup_cpu_win: trying to allocate "
"window %d\n", win);
- return;
+ return -ENOSPC;
}
writel(base & 0xffff0000, CPU_WIN_BASE(win));
@@ -107,6 +110,7 @@ static void __init setup_cpu_win(int win, u32 base, u32 size,
writel(remap & 0xffff0000, CPU_WIN_REMAP_LO(win));
writel(0, CPU_WIN_REMAP_HI(win));
}
+ return 0;
}
void __init orion5x_setup_cpu_mbus_bridge(void)
@@ -193,3 +197,9 @@ void __init orion5x_setup_pcie_wa_win(u32 base, u32 size)
setup_cpu_win(win_alloc_count++, base, size,
TARGET_PCIE, ATTR_PCIE_WA, -1);
}
+
+int __init orion5x_setup_sram_win(void)
+{
+ return setup_cpu_win(win_alloc_count++, ORION5X_SRAM_PHYS_BASE,
+ ORION5X_SRAM_SIZE, TARGET_SRAM, ATTR_SRAM, -1);
+}
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index b1c7778..f290582 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -536,6 +536,42 @@ void __init orion5x_xor_init(void)
platform_device_register(&orion5x_xor1_channel);
}
+static struct resource orion5x_crypto_res[] = {
+ {
+ .name = "regs",
+ .start = ORION5X_CRYPTO_PHYS_BASE,
+ .end = ORION5X_CRYPTO_PHYS_BASE + 0xffff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .name = "sram",
+ .start = ORION5X_SRAM_PHYS_BASE,
+ .end = ORION5X_SRAM_PHYS_BASE + 8 * 1024,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .name = "crypto interrupt",
+ .start = IRQ_ORION5X_CESA,
+ .end = IRQ_ORION5X_CESA,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device orion5x_crypto_device = {
+ .name = "mv,orion5x-crypto",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(orion5x_crypto_res),
+ .resource = orion5x_crypto_res,
+};
+
+int __init orion5x_crypto_init(void)
+{
+ int ret;
+
+ ret = orion5x_setup_sram_win();
+ if (ret)
+ return ret;
+
+ return platform_device_register(&orion5x_crypto_device);
+}
/*****************************************************************************
* Watchdog
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index 798b9a5..de483e8 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -26,6 +26,7 @@ void orion5x_setup_dev0_win(u32 base, u32 size);
void orion5x_setup_dev1_win(u32 base, u32 size);
void orion5x_setup_dev2_win(u32 base, u32 size);
void orion5x_setup_pcie_wa_win(u32 base, u32 size);
+int orion5x_setup_sram_win(void);
void orion5x_ehci0_init(void);
void orion5x_ehci1_init(void);
@@ -37,6 +38,7 @@ void orion5x_spi_init(void);
void orion5x_uart0_init(void);
void orion5x_uart1_init(void);
void orion5x_xor_init(void);
+int orion5x_crypto_init(void);
/*
* PCIe/PCI functions.
diff --git a/arch/arm/mach-orion5x/include/mach/orion5x.h b/arch/arm/mach-orion5x/include/mach/orion5x.h
index 377a773..2d87665 100644
--- a/arch/arm/mach-orion5x/include/mach/orion5x.h
+++ b/arch/arm/mach-orion5x/include/mach/orion5x.h
@@ -24,6 +24,7 @@
* f1000000 on-chip peripheral registers
* f2000000 PCIe I/O space
* f2100000 PCI I/O space
+ * f2200000 SRAM dedicated for the crypto unit
* f4000000 device bus mappings (boot)
* fa000000 device bus mappings (cs0)
* fa800000 device bus mappings (cs2)
@@ -49,6 +50,9 @@
#define ORION5X_PCI_IO_BUS_BASE 0x00100000
#define ORION5X_PCI_IO_SIZE SZ_1M
+#define ORION5X_SRAM_PHYS_BASE (0xf2200000)
+#define ORION5X_SRAM_SIZE SZ_8K
+
/* Relevant only for Orion-1/Orion-NAS */
#define ORION5X_PCIE_WA_PHYS_BASE 0xf0000000
#define ORION5X_PCIE_WA_VIRT_BASE 0xfe000000
@@ -94,6 +98,8 @@
#define ORION5X_SATA_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0x80000)
#define ORION5X_SATA_VIRT_BASE (ORION5X_REGS_VIRT_BASE | 0x80000)
+#define ORION5X_CRYPTO_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0x90000)
+
#define ORION5X_USB1_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0xa0000)
#define ORION5X_USB1_VIRT_BASE (ORION5X_REGS_VIRT_BASE | 0xa0000)
--
1.6.0.6
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