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powerpc/pseries: Move architecture vector definitions to prom.h
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As part of handling of PRRN events we need to check vector 5 of the
architecture vector bits reported in the device tree to ensure PRRN event
handling is enabled. To do this firmware_has_feature() is updated (in a
subsequent patch) to make this check vector 5 bits. To avoid having to
re-define bits in the architecture vector the bit definitions are moved
to prom.h.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Nathan Fontenot authored and Benjamin Herrenschmidt committed Apr 26, 2013
1 parent 49c68a8 commit 530b5e1
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Showing 2 changed files with 77 additions and 69 deletions.
71 changes: 71 additions & 0 deletions arch/powerpc/include/asm/prom.h
Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,77 @@ struct of_drconf_cell {
#define DRCONF_MEM_AI_INVALID 0x00000040
#define DRCONF_MEM_RESERVED 0x00000080

/*
* There are two methods for telling firmware what our capabilities are.
* Newer machines have an "ibm,client-architecture-support" method on the
* root node. For older machines, we have to call the "process-elf-header"
* method in the /packages/elf-loader node, passing it a fake 32-bit
* ELF header containing a couple of PT_NOTE sections that contain
* structures that contain various information.
*/

/* New method - extensible architecture description vector. */

/* Option vector bits - generic bits in byte 1 */
#define OV_IGNORE 0x80 /* ignore this vector */
#define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/

/* Option vector 1: processor architectures supported */
#define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */
#define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */
#define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */
#define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */
#define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */
#define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */
#define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */
#define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */

/* Option vector 2: Open Firmware options supported */
#define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */

/* Option vector 3: processor options supported */
#define OV3_FP 0x80 /* floating point */
#define OV3_VMX 0x40 /* VMX/Altivec */
#define OV3_DFP 0x20 /* decimal FP */

/* Option vector 4: IBM PAPR implementation */
#define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */

/* Option vector 5: PAPR/OF options supported */
#define OV5_LPAR 0x80 /* logical partitioning supported */
#define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */
/* ibm,dynamic-reconfiguration-memory property supported */
#define OV5_DRCONF_MEMORY 0x20
#define OV5_LARGE_PAGES 0x10 /* large pages supported */
#define OV5_DONATE_DEDICATE_CPU 0x02 /* donate dedicated CPU support */
/* PCIe/MSI support. Without MSI full PCIe is not supported */
#ifdef CONFIG_PCI_MSI
#define OV5_MSI 0x01 /* PCIe/MSI support */
#else
#define OV5_MSI 0x00
#endif /* CONFIG_PCI_MSI */
#ifdef CONFIG_PPC_SMLPAR
#define OV5_CMO 0x80 /* Cooperative Memory Overcommitment */
#define OV5_XCMO 0x40 /* Page Coalescing */
#else
#define OV5_CMO 0x00
#define OV5_XCMO 0x00
#endif
#define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */
#define OV5_PFO_HW_RNG 0x80 /* PFO Random Number Generator */
#define OV5_PFO_HW_842 0x40 /* PFO Compression Accelerator */
#define OV5_PFO_HW_ENCR 0x20 /* PFO Encryption Accelerator */
#define OV5_SUB_PROCESSORS 0x01 /* 1,2,or 4 Sub-Processors supported */

/* Option Vector 6: IBM PAPR hints */
#define OV6_LINUX 0x02 /* Linux is our OS */

/*
* The architecture vector has an array of PVR mask/value pairs,
* followed by # option vectors - 1, followed by the option vectors.
*/
extern unsigned char ibm_architecture_vec[];

/* These includes are put at the bottom because they may contain things
* that are overridden by this file. Ideally they shouldn't be included
* by this file, but there are a bunch of .c files that currently depend
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75 changes: 6 additions & 69 deletions arch/powerpc/kernel/prom_init.c
Original file line number Diff line number Diff line change
Expand Up @@ -627,16 +627,11 @@ static void __init early_cmdline_parse(void)

#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
/*
* There are two methods for telling firmware what our capabilities are.
* Newer machines have an "ibm,client-architecture-support" method on the
* root node. For older machines, we have to call the "process-elf-header"
* method in the /packages/elf-loader node, passing it a fake 32-bit
* ELF header containing a couple of PT_NOTE sections that contain
* structures that contain various information.
*/

/*
* New method - extensible architecture description vector.
* The architecture vector has an array of PVR mask/value pairs,
* followed by # option vectors - 1, followed by the option vectors.
*
* See prom.h for the definition of the bits specified in the
* architecture vector.
*
* Because the description vector contains a mix of byte and word
* values, we declare it as an unsigned char array, and use this
Expand All @@ -645,65 +640,7 @@ static void __init early_cmdline_parse(void)
#define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
((x) >> 8) & 0xff, (x) & 0xff

/* Option vector bits - generic bits in byte 1 */
#define OV_IGNORE 0x80 /* ignore this vector */
#define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/

/* Option vector 1: processor architectures supported */
#define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */
#define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */
#define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */
#define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */
#define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */
#define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */
#define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */
#define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */

/* Option vector 2: Open Firmware options supported */
#define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */

/* Option vector 3: processor options supported */
#define OV3_FP 0x80 /* floating point */
#define OV3_VMX 0x40 /* VMX/Altivec */
#define OV3_DFP 0x20 /* decimal FP */

/* Option vector 4: IBM PAPR implementation */
#define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */

/* Option vector 5: PAPR/OF options supported */
#define OV5_LPAR 0x80 /* logical partitioning supported */
#define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */
/* ibm,dynamic-reconfiguration-memory property supported */
#define OV5_DRCONF_MEMORY 0x20
#define OV5_LARGE_PAGES 0x10 /* large pages supported */
#define OV5_DONATE_DEDICATE_CPU 0x02 /* donate dedicated CPU support */
/* PCIe/MSI support. Without MSI full PCIe is not supported */
#ifdef CONFIG_PCI_MSI
#define OV5_MSI 0x01 /* PCIe/MSI support */
#else
#define OV5_MSI 0x00
#endif /* CONFIG_PCI_MSI */
#ifdef CONFIG_PPC_SMLPAR
#define OV5_CMO 0x80 /* Cooperative Memory Overcommitment */
#define OV5_XCMO 0x40 /* Page Coalescing */
#else
#define OV5_CMO 0x00
#define OV5_XCMO 0x00
#endif
#define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */
#define OV5_PFO_HW_RNG 0x80 /* PFO Random Number Generator */
#define OV5_PFO_HW_842 0x40 /* PFO Compression Accelerator */
#define OV5_PFO_HW_ENCR 0x20 /* PFO Encryption Accelerator */
#define OV5_SUB_PROCESSORS 0x01 /* 1,2,or 4 Sub-Processors supported */

/* Option Vector 6: IBM PAPR hints */
#define OV6_LINUX 0x02 /* Linux is our OS */

/*
* The architecture vector has an array of PVR mask/value pairs,
* followed by # option vectors - 1, followed by the option vectors.
*/
static unsigned char ibm_architecture_vec[] = {
unsigned char ibm_architecture_vec[] = {
W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */
W(0xffff0000), W(0x003e0000), /* POWER6 */
W(0xffff0000), W(0x003f0000), /* POWER7 */
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