[ARM] orion5x: add sram support for crypto

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 for the actual driver.

[ nico: renamed device name from "mv,orion5x-crypto" to "mv_crypto"
  so to match the module name and be more generic for Kirkwood use ]

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This commit is contained in:
Sebastian Andrzej Siewior 2009-05-07 22:59:24 +02:00 committed by Nicolas Pitre
parent 9ffbe87370
commit 3a8f744169
4 changed files with 56 additions and 2 deletions

View file

@ -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);
}

View file

@ -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 + SZ_8K - 1,
.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_crypto",
.id = -1,
.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

View file

@ -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.

View file

@ -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)