aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorKrzysztof Halasa <khc@pm.waw.pl>2007-12-17 21:53:27 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-02-04 08:15:25 -0500
commitc18f65816ef80b67eb4511ed8359c2dfcd69680d (patch)
tree4802b4316796b8dbee051d2a36064e221249f8df /include
parenta9a424ce9a209155f3d4b9f8ceba50cdebb7769b (diff)
[ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits
Adds functions to read and write IXP4xx "feature" (aka "fuse") bits, containing information about available/enabled CPU features. The uncompress.h included by boot/compressed/misc.c resides in a different space than rest of the kernel and thus can't use asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use EXPORTed symbol "processor_id"). Posted to linux-arm-kernel on 2 Dec 2007 and revised. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/asm-arm/arch-ixp4xx/cpu.h15
-rw-r--r--include/asm-arm/arch-ixp4xx/hardware.h6
-rw-r--r--include/asm-arm/arch-ixp4xx/ixp4xx-regs.h36
-rw-r--r--include/asm-arm/arch-ixp4xx/uncompress.h2
4 files changed, 51 insertions, 8 deletions
diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h
index d2523b326c6c..2fa3d6b8dbb8 100644
--- a/include/asm-arm/arch-ixp4xx/cpu.h
+++ b/include/asm-arm/arch-ixp4xx/cpu.h
@@ -28,4 +28,19 @@ extern unsigned int processor_id;
28#define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ 28#define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
29 IXP465_PROCESSOR_ID_VALUE) 29 IXP465_PROCESSOR_ID_VALUE)
30 30
31static inline u32 ixp4xx_read_feature_bits(void)
32{
33 unsigned int val = ~*IXP4XX_EXP_CFG2;
34 val &= ~IXP4XX_FEATURE_RESERVED;
35 if (!cpu_is_ixp46x())
36 val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
37
38 return val;
39}
40
41static inline void ixp4xx_write_feature_bits(u32 value)
42{
43 *IXP4XX_EXP_CFG2 = ~value;
44}
45
31#endif /* _ASM_ARCH_CPU_H */ 46#endif /* _ASM_ARCH_CPU_H */
diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h
index 297ceda08b61..73e8dc36f6a4 100644
--- a/include/asm-arm/arch-ixp4xx/hardware.h
+++ b/include/asm-arm/arch-ixp4xx/hardware.h
@@ -27,13 +27,13 @@
27 27
28#define pcibios_assign_all_busses() 1 28#define pcibios_assign_all_busses() 1
29 29
30/* Register locations and bits */
31#include "ixp4xx-regs.h"
32
30#ifndef __ASSEMBLER__ 33#ifndef __ASSEMBLER__
31#include <asm/arch/cpu.h> 34#include <asm/arch/cpu.h>
32#endif 35#endif
33 36
34/* Register locations and bits */
35#include "ixp4xx-regs.h"
36
37/* Platform helper functions and definitions */ 37/* Platform helper functions and definitions */
38#include "platform.h" 38#include "platform.h"
39 39
diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
index 5d949d763a91..c704fe8cf42f 100644
--- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
+++ b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
@@ -15,10 +15,6 @@
15 * 15 *
16 */ 16 */
17 17
18#ifndef __ASM_ARCH_HARDWARE_H__
19#error "Do not include this directly, instead #include <asm/hardware.h>"
20#endif
21
22#ifndef _ASM_ARM_IXP4XX_H_ 18#ifndef _ASM_ARM_IXP4XX_H_
23#define _ASM_ARM_IXP4XX_H_ 19#define _ASM_ARM_IXP4XX_H_
24 20
@@ -607,4 +603,36 @@
607 603
608#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ 604#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */
609 605
606/* "fuse" bits of IXP_EXP_CFG2 */
607#define IXP4XX_FEATURE_RCOMP (1 << 0)
608#define IXP4XX_FEATURE_USB_DEVICE (1 << 1)
609#define IXP4XX_FEATURE_HASH (1 << 2)
610#define IXP4XX_FEATURE_AES (1 << 3)
611#define IXP4XX_FEATURE_DES (1 << 4)
612#define IXP4XX_FEATURE_HDLC (1 << 5)
613#define IXP4XX_FEATURE_AAL (1 << 6)
614#define IXP4XX_FEATURE_HSS (1 << 7)
615#define IXP4XX_FEATURE_UTOPIA (1 << 8)
616#define IXP4XX_FEATURE_NPEB_ETH0 (1 << 9)
617#define IXP4XX_FEATURE_NPEC_ETH (1 << 10)
618#define IXP4XX_FEATURE_RESET_NPEA (1 << 11)
619#define IXP4XX_FEATURE_RESET_NPEB (1 << 12)
620#define IXP4XX_FEATURE_RESET_NPEC (1 << 13)
621#define IXP4XX_FEATURE_PCI (1 << 14)
622#define IXP4XX_FEATURE_ECC_TIMESYNC (1 << 15)
623#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16)
624#define IXP4XX_FEATURE_USB_HOST (1 << 18)
625#define IXP4XX_FEATURE_NPEA_ETH (1 << 19)
626#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3 (1 << 20)
627#define IXP4XX_FEATURE_RSA (1 << 21)
628#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22)
629#define IXP4XX_FEATURE_RESERVED (0xFF << 24)
630
631#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC | \
632 IXP4XX_FEATURE_USB_HOST | \
633 IXP4XX_FEATURE_NPEA_ETH | \
634 IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \
635 IXP4XX_FEATURE_RSA | \
636 IXP4XX_FEATURE_XSCALE_MAX_FREQ)
637
610#endif 638#endif
diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h
index f7a35b78823f..34ef48fe327e 100644
--- a/include/asm-arm/arch-ixp4xx/uncompress.h
+++ b/include/asm-arm/arch-ixp4xx/uncompress.h
@@ -13,7 +13,7 @@
13#ifndef _ARCH_UNCOMPRESS_H_ 13#ifndef _ARCH_UNCOMPRESS_H_
14#define _ARCH_UNCOMPRESS_H_ 14#define _ARCH_UNCOMPRESS_H_
15 15
16#include <asm/hardware.h> 16#include "ixp4xx-regs.h"
17#include <asm/mach-types.h> 17#include <asm/mach-types.h>
18#include <linux/serial_reg.h> 18#include <linux/serial_reg.h>
19 19