From 8c6cc7b9df36e0ca6f562a46f2afd883b6dc6867 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:15 -0400 Subject: pc-bios: s390x: cio.c cleanup and compile fix Let's initialize the structs at the beginning to ease reading and also zeroing all other fields. This also makes the compiler stop complaining about sense_id_ccw.flags being ored into when it's not initialized. Signed-off-by: Janosch Frank Reviewed-by: Pierre Morel Reviewed-by: Thomas Huth Reviewed-by: David Hildenbrand Reviewed-by: Christian Borntraeger Reviewed-by: Cornelia Huck Message-Id: <20200624075226.92728-2-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/cio.c | 40 ++++++++++++++++++++++------------------ 1 file changed, 22 insertions(+), 18 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/cio.c b/pc-bios/s390-ccw/cio.c index 339ec5f..83ca27a 100644 --- a/pc-bios/s390-ccw/cio.c +++ b/pc-bios/s390-ccw/cio.c @@ -49,13 +49,13 @@ void enable_subchannel(SubChannelId schid) uint16_t cu_type(SubChannelId schid) { - Ccw1 sense_id_ccw; SenseId sense_data; - - sense_id_ccw.cmd_code = CCW_CMD_SENSE_ID; - sense_id_ccw.cda = ptr2u32(&sense_data); - sense_id_ccw.count = sizeof(sense_data); - sense_id_ccw.flags |= CCW_FLAG_SLI; + Ccw1 sense_id_ccw = { + .cmd_code = CCW_CMD_SENSE_ID, + .flags = CCW_FLAG_SLI, + .count = sizeof(sense_data), + .cda = ptr2u32(&sense_data), + }; if (do_cio(schid, CU_TYPE_UNKNOWN, ptr2u32(&sense_id_ccw), CCW_FMT1)) { panic("Failed to run SenseID CCw\n"); @@ -67,13 +67,13 @@ uint16_t cu_type(SubChannelId schid) int basic_sense(SubChannelId schid, uint16_t cutype, void *sense_data, uint16_t data_size) { - Ccw1 senseCcw; + Ccw1 senseCcw = { + .cmd_code = CCW_CMD_BASIC_SENSE, + .count = data_size, + .cda = ptr2u32(sense_data), + }; Irb irb; - senseCcw.cmd_code = CCW_CMD_BASIC_SENSE; - senseCcw.cda = ptr2u32(sense_data); - senseCcw.count = data_size; - return __do_cio(schid, ptr2u32(&senseCcw), CCW_FMT1, &irb); } @@ -314,7 +314,17 @@ static void print_irb_err(Irb *irb) */ static int __do_cio(SubChannelId schid, uint32_t ccw_addr, int fmt, Irb *irb) { - CmdOrb orb = {}; + /* + * QEMU's CIO implementation requires prefetch and 64-bit idaws. We + * allow all paths. + */ + CmdOrb orb = { + .fmt = fmt, + .pfch = 1, + .c64 = 1, + .lpm = 0xFF, + .cpa = ccw_addr, + }; int rc; IPL_assert(fmt == 0 || fmt == 1, "Invalid ccw format"); @@ -324,12 +334,6 @@ static int __do_cio(SubChannelId schid, uint32_t ccw_addr, int fmt, Irb *irb) IPL_assert(ccw_addr <= 0xFFFFFF - 8, "Invalid ccw address"); } - orb.fmt = fmt; - orb.pfch = 1; /* QEMU's cio implementation requires prefetch */ - orb.c64 = 1; /* QEMU's cio implementation requires 64-bit idaws */ - orb.lpm = 0xFF; /* All paths allowed */ - orb.cpa = ccw_addr; - rc = ssch(schid, &orb); if (rc == 1 || rc == 2) { /* Subchannel status pending or busy. Eat status and ask for retry. */ -- cgit v1.1 From e70bc57ba0c982944cf5b71f293122dbb2b462f4 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:16 -0400 Subject: pc-bios: s390x: Consolidate timing functions into time.h Let's consolidate timing related functions into one header. Signed-off-by: Janosch Frank Acked-by: Thomas Huth Reviewed-by: David Hildenbrand Message-Id: <20200624075226.92728-3-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/menu.c | 1 + pc-bios/s390-ccw/netmain.c | 15 +++------------ pc-bios/s390-ccw/s390-ccw.h | 8 ++++---- pc-bios/s390-ccw/s390-time.h | 23 +++++++++++++++++++++++ pc-bios/s390-ccw/virtio-net.c | 1 + pc-bios/s390-ccw/virtio-scsi.c | 1 + pc-bios/s390-ccw/virtio.c | 18 +++--------------- 7 files changed, 36 insertions(+), 31 deletions(-) create mode 100644 pc-bios/s390-ccw/s390-time.h (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/menu.c b/pc-bios/s390-ccw/menu.c index ce3815b..de8260a 100644 --- a/pc-bios/s390-ccw/menu.c +++ b/pc-bios/s390-ccw/menu.c @@ -12,6 +12,7 @@ #include "libc.h" #include "s390-ccw.h" #include "sclp.h" +#include "s390-time.h" #define KEYCODE_NO_INP '\0' #define KEYCODE_ESCAPE '\033' diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index 309ffa3..f1ee635 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -35,6 +35,7 @@ #include "s390-ccw.h" #include "cio.h" #include "virtio.h" +#include "s390-time.h" #define DEFAULT_BOOT_RETRIES 10 #define DEFAULT_TFTP_RETRIES 20 @@ -57,24 +58,14 @@ static SubChannelId net_schid = { .one = 1 }; static uint8_t mac[6]; static uint64_t dest_timer; -static uint64_t get_timer_ms(void) -{ - uint64_t clk; - - asm volatile(" stck %0 " : : "Q"(clk) : "memory"); - - /* Bit 51 is incremented each microsecond */ - return (clk >> (63 - 51)) / 1000; -} - void set_timer(int val) { - dest_timer = get_timer_ms() + val; + dest_timer = get_time_ms() + val; } int get_timer(void) { - return dest_timer - get_timer_ms(); + return dest_timer - get_time_ms(); } int get_sec_ticks(void) diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h index 21f27e7..fae1de3 100644 --- a/pc-bios/s390-ccw/s390-ccw.h +++ b/pc-bios/s390-ccw/s390-ccw.h @@ -74,8 +74,6 @@ unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2, bool virtio_is_supported(SubChannelId schid); void virtio_blk_setup_device(SubChannelId schid); int virtio_read(ulong sector, void *load_addr); -u64 get_clock(void); -ulong get_second(void); /* bootmap.c */ void zipl_load(void); @@ -153,11 +151,13 @@ static inline void yield(void) #define MAX_SECTOR_SIZE 4096 +#include "s390-time.h" + static inline void sleep(unsigned int seconds) { - ulong target = get_second() + seconds; + ulong target = get_time_seconds() + seconds; - while (get_second() < target) { + while (get_time_seconds() < target) { yield(); } } diff --git a/pc-bios/s390-ccw/s390-time.h b/pc-bios/s390-ccw/s390-time.h new file mode 100644 index 0000000..ed6d982 --- /dev/null +++ b/pc-bios/s390-ccw/s390-time.h @@ -0,0 +1,23 @@ +#ifndef TIME_H +#define TIME_H + +static inline u64 get_clock(void) +{ + u64 r; + + asm volatile("stck %0" : "=Q" (r) : : "cc"); + return r; +} + +static inline u64 get_time_ms(void) +{ + /* Bit 51 is incremented each microsecond */ + return (get_clock() >> 12) / 1000; +} + +static inline u64 get_time_seconds(void) +{ + return get_time_ms() / 1000; +} + +#endif diff --git a/pc-bios/s390-ccw/virtio-net.c b/pc-bios/s390-ccw/virtio-net.c index ff7f4da..a13f3b6 100644 --- a/pc-bios/s390-ccw/virtio-net.c +++ b/pc-bios/s390-ccw/virtio-net.c @@ -19,6 +19,7 @@ #include #include "s390-ccw.h" #include "virtio.h" +#include "s390-time.h" #ifndef DEBUG_VIRTIO_NET #define DEBUG_VIRTIO_NET 0 diff --git a/pc-bios/s390-ccw/virtio-scsi.c b/pc-bios/s390-ccw/virtio-scsi.c index 4fe4b9d..7bf0be4 100644 --- a/pc-bios/s390-ccw/virtio-scsi.c +++ b/pc-bios/s390-ccw/virtio-scsi.c @@ -14,6 +14,7 @@ #include "virtio.h" #include "scsi.h" #include "virtio-scsi.h" +#include "s390-time.h" static ScsiDevice default_scsi_device; static VirtioScsiCmdReq req; diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c index fb40ca9..ab49840 100644 --- a/pc-bios/s390-ccw/virtio.c +++ b/pc-bios/s390-ccw/virtio.c @@ -15,6 +15,7 @@ #include "virtio-scsi.h" #include "bswap.h" #include "helper.h" +#include "s390-time.h" #define VRING_WAIT_REPLY_TIMEOUT 30 @@ -157,19 +158,6 @@ void vring_send_buf(VRing *vr, void *p, int len, int flags) } } -u64 get_clock(void) -{ - u64 r; - - asm volatile("stck %0" : "=Q" (r) : : "cc"); - return r; -} - -ulong get_second(void) -{ - return (get_clock() >> 12) / 1000000; -} - int vr_poll(VRing *vr) { if (vr->used->idx == vr->used_idx) { @@ -194,7 +182,7 @@ int vr_poll(VRing *vr) */ int vring_wait_reply(void) { - ulong target_second = get_second() + vdev.wait_reply_timeout; + ulong target_second = get_time_seconds() + vdev.wait_reply_timeout; /* Wait for any queue to be updated by the host */ do { @@ -207,7 +195,7 @@ int vring_wait_reply(void) if (r) { return 0; } - } while (!vdev.wait_reply_timeout || (get_second() < target_second)); + } while (!vdev.wait_reply_timeout || (get_time_seconds() < target_second)); return 1; } -- cgit v1.1 From 12ea90dbd8fc38ca937acb53c730818077bf86fe Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:17 -0400 Subject: pc-bios: s390x: Move sleep and yield to helper.h They are definitely helper functions. Signed-off-by: Janosch Frank Reviewed-by: Christian Borntraeger Reviewed-by: Thomas Huth Reviewed-by: David Hildenbrand Message-Id: <20200624075226.92728-4-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/helper.h | 17 +++++++++++++++++ pc-bios/s390-ccw/s390-ccw.h | 18 ------------------ pc-bios/s390-ccw/virtio-net.c | 1 + pc-bios/s390-ccw/virtio-scsi.c | 1 + 4 files changed, 19 insertions(+), 18 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/helper.h b/pc-bios/s390-ccw/helper.h index 78d5bc7..32a453b 100644 --- a/pc-bios/s390-ccw/helper.h +++ b/pc-bios/s390-ccw/helper.h @@ -14,6 +14,7 @@ #define S390_CCW_HELPER_H #include "s390-ccw.h" +#include "s390-time.h" /* Avoids compiler warnings when casting a pointer to a u32 */ static inline uint32_t ptr2u32(void *ptr) @@ -28,4 +29,20 @@ static inline void *u32toptr(uint32_t n) return (void *)(uint64_t)n; } +static inline void yield(void) +{ + asm volatile ("diag 0,0,0x44" + : : + : "memory", "cc"); +} + +static inline void sleep(unsigned int seconds) +{ + ulong target = get_time_seconds() + seconds; + + while (get_time_seconds() < target) { + yield(); + } +} + #endif diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h index fae1de3..c5820e4 100644 --- a/pc-bios/s390-ccw/s390-ccw.h +++ b/pc-bios/s390-ccw/s390-ccw.h @@ -142,26 +142,8 @@ static inline void debug_print_addr(const char *desc, void *p) #define KVM_S390_VIRTIO_SET_STATUS 2 #define KVM_S390_VIRTIO_CCW_NOTIFY 3 -static inline void yield(void) -{ - asm volatile ("diag 0,0,0x44" - : : - : "memory", "cc"); -} - #define MAX_SECTOR_SIZE 4096 -#include "s390-time.h" - -static inline void sleep(unsigned int seconds) -{ - ulong target = get_time_seconds() + seconds; - - while (get_time_seconds() < target) { - yield(); - } -} - static inline void IPL_assert(bool term, const char *message) { if (!term) { diff --git a/pc-bios/s390-ccw/virtio-net.c b/pc-bios/s390-ccw/virtio-net.c index a13f3b6..2fcb0a5 100644 --- a/pc-bios/s390-ccw/virtio-net.c +++ b/pc-bios/s390-ccw/virtio-net.c @@ -20,6 +20,7 @@ #include "s390-ccw.h" #include "virtio.h" #include "s390-time.h" +#include "helper.h" #ifndef DEBUG_VIRTIO_NET #define DEBUG_VIRTIO_NET 0 diff --git a/pc-bios/s390-ccw/virtio-scsi.c b/pc-bios/s390-ccw/virtio-scsi.c index 7bf0be4..eddfb8a 100644 --- a/pc-bios/s390-ccw/virtio-scsi.c +++ b/pc-bios/s390-ccw/virtio-scsi.c @@ -15,6 +15,7 @@ #include "scsi.h" #include "virtio-scsi.h" #include "s390-time.h" +#include "helper.h" static ScsiDevice default_scsi_device; static VirtioScsiCmdReq req; -- cgit v1.1 From e6d393d097ac09c9146772a829fff1bfaf61eb9d Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:18 -0400 Subject: pc-bios: s390x: Get rid of magic offsets into the lowcore If we have a lowcore struct that has members for offsets that we want to touch, why not use it? Signed-off-by: Janosch Frank Reviewed-by: David Hildenbrand Reviewed-by: Thomas Huth Reviewed-by: Cornelia Huck Message-Id: <20200624075226.92728-5-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/cio.h | 17 +++++++++++------ pc-bios/s390-ccw/main.c | 8 +++----- 2 files changed, 14 insertions(+), 11 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/cio.h b/pc-bios/s390-ccw/cio.h index aaa432d..1e5d4e9 100644 --- a/pc-bios/s390-ccw/cio.h +++ b/pc-bios/s390-ccw/cio.h @@ -122,12 +122,17 @@ typedef struct schib { } __attribute__ ((packed, aligned(4))) Schib; typedef struct subchannel_id { - __u32 cssid:8; - __u32:4; - __u32 m:1; - __u32 ssid:2; - __u32 one:1; - __u32 sch_no:16; + union { + struct { + __u16 cssid:8; + __u16 reserved:4; + __u16 m:1; + __u16 ssid:2; + __u16 one:1; + }; + __u16 sch_id; + }; + __u16 sch_no; } __attribute__ ((packed, aligned(4))) SubChannelId; struct chsc_header { diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 4e65b41..8b91245 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -36,11 +36,9 @@ LowCore *lowcore; /* Yes, this *is* a pointer to address 0 */ */ void write_subsystem_identification(void) { - SubChannelId *schid = (SubChannelId *) 184; - uint32_t *zeroes = (uint32_t *) 188; - - *schid = blk_schid; - *zeroes = 0; + lowcore->subchannel_id = blk_schid.sch_id; + lowcore->subchannel_nr = blk_schid.sch_no; + lowcore->io_int_parm = 0; } void write_iplb_location(void) -- cgit v1.1 From b88faa1c899db2fae8b5b168aeb6c47bef090f27 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:20 -0400 Subject: pc-bios: s390x: Rename PSW_MASK_ZMODE to PSW_MASK_64 This constant enables 64 bit addressing, not the ESAME architecture, so it shouldn't be named ZMODE. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth Message-Id: <20200624075226.92728-7-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/s390-arch.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/s390-arch.h b/pc-bios/s390-ccw/s390-arch.h index 5f36361..7385202 100644 --- a/pc-bios/s390-ccw/s390-arch.h +++ b/pc-bios/s390-ccw/s390-arch.h @@ -29,7 +29,7 @@ _Static_assert(sizeof(struct PSWLegacy) == 8, "PSWLegacy size incorrect"); #define PSW_MASK_WAIT 0x0002000000000000ULL #define PSW_MASK_EAMODE 0x0000000100000000ULL #define PSW_MASK_BAMODE 0x0000000080000000ULL -#define PSW_MASK_ZMODE (PSW_MASK_EAMODE | PSW_MASK_BAMODE) +#define PSW_MASK_64 (PSW_MASK_EAMODE | PSW_MASK_BAMODE) /* Low core mapping */ typedef struct LowCore { -- cgit v1.1 From fe75c657b8ee962da79f5d3518b139e26dc69c24 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:21 -0400 Subject: pc-bios: s390x: Use PSW masks where possible and introduce PSW_MASK_SHORT_ADDR Let's move some of the PSW mask defines into s390-arch.h and use them in jump2ipl.c. Also let's introduce a new constant for the address mask of 8 byte (short) PSWs. Signed-off-by: Janosch Frank Reviewed-by: David Hildenbrand Reviewed-by: Thomas Huth Message-Id: <20200624075226.92728-8-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/jump2ipl.c | 10 ++++------ pc-bios/s390-ccw/s390-arch.h | 2 ++ 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/jump2ipl.c b/pc-bios/s390-ccw/jump2ipl.c index 4eba251..767012b 100644 --- a/pc-bios/s390-ccw/jump2ipl.c +++ b/pc-bios/s390-ccw/jump2ipl.c @@ -8,12 +8,10 @@ #include "libc.h" #include "s390-ccw.h" +#include "s390-arch.h" #define KERN_IMAGE_START 0x010000UL -#define PSW_MASK_64 0x0000000100000000ULL -#define PSW_MASK_32 0x0000000080000000ULL -#define PSW_MASK_SHORTPSW 0x0008000000000000ULL -#define RESET_PSW_MASK (PSW_MASK_SHORTPSW | PSW_MASK_32 | PSW_MASK_64) +#define RESET_PSW_MASK (PSW_MASK_SHORTPSW | PSW_MASK_64) typedef struct ResetInfo { uint64_t ipl_psw; @@ -54,7 +52,7 @@ void jump_to_IPL_code(uint64_t address) current->ipl_psw = (uint64_t) &jump_to_IPL_2; current->ipl_psw |= RESET_PSW_MASK; - current->ipl_continue = address & 0x7fffffff; + current->ipl_continue = address & PSW_MASK_SHORT_ADDR; debug_print_int("set IPL addr to", current->ipl_continue); @@ -86,7 +84,7 @@ void jump_to_low_kernel(void) /* Trying to get PSW at zero address */ if (*((uint64_t *)0) & RESET_PSW_MASK) { - jump_to_IPL_code((*((uint64_t *)0)) & 0x7fffffff); + jump_to_IPL_code((*((uint64_t *)0)) & PSW_MASK_SHORT_ADDR); } /* No other option left, so use the Linux kernel start address */ diff --git a/pc-bios/s390-ccw/s390-arch.h b/pc-bios/s390-ccw/s390-arch.h index 7385202..6da44d4 100644 --- a/pc-bios/s390-ccw/s390-arch.h +++ b/pc-bios/s390-ccw/s390-arch.h @@ -26,9 +26,11 @@ _Static_assert(sizeof(struct PSWLegacy) == 8, "PSWLegacy size incorrect"); /* s390 psw bit masks */ #define PSW_MASK_IOINT 0x0200000000000000ULL +#define PSW_MASK_SHORTPSW 0x0008000000000000ULL #define PSW_MASK_WAIT 0x0002000000000000ULL #define PSW_MASK_EAMODE 0x0000000100000000ULL #define PSW_MASK_BAMODE 0x0000000080000000ULL +#define PSW_MASK_SHORT_ADDR 0x000000007fffffffULL #define PSW_MASK_64 (PSW_MASK_EAMODE | PSW_MASK_BAMODE) /* Low core mapping */ -- cgit v1.1 From add923b72e76080ca5339a27d58ed13566156935 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:22 -0400 Subject: pc-bios: s390x: Move panic() into header and add infinite loop panic() was defined for the ccw and net bios, i.e. twice, so it's cleaner to rather put it into the header. Also let's add an infinite loop into the assembly of disabled_wait() so the caller doesn't need to take care of it. Signed-off-by: Janosch Frank Reviewed-by: Pierre Morel Reviewed-by: David Hildenbrand Reviewed-by: Thomas Huth Message-Id: <20200624075226.92728-9-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/main.c | 7 ------- pc-bios/s390-ccw/netmain.c | 8 -------- pc-bios/s390-ccw/s390-ccw.h | 9 +++++++-- pc-bios/s390-ccw/start.S | 5 +++-- 4 files changed, 10 insertions(+), 19 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 8b91245..146a507 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -46,13 +46,6 @@ void write_iplb_location(void) lowcore->ptr_iplb = ptr2u32(&iplb); } -void panic(const char *string) -{ - sclp_print(string); - disabled_wait(); - while (1) { } -} - unsigned int get_loadparm_index(void) { return atoui(loadparm_str); diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index f1ee635..056e93a 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -439,14 +439,6 @@ static int net_try_direct_tftp_load(filename_ip_t *fn_ip) return rc; } -void panic(const char *string) -{ - sclp_print(string); - for (;;) { - disabled_wait(); - } -} - void write_subsystem_identification(void) { SubChannelId *schid = (SubChannelId *) 184; diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h index c5820e4..36b884c 100644 --- a/pc-bios/s390-ccw/s390-ccw.h +++ b/pc-bios/s390-ccw/s390-ccw.h @@ -50,12 +50,11 @@ typedef unsigned long long __u64; #include "iplb.h" /* start.s */ -void disabled_wait(void); +void disabled_wait(void) __attribute__ ((__noreturn__)); void consume_sclp_int(void); void consume_io_int(void); /* main.c */ -void panic(const char *string); void write_subsystem_identification(void); void write_iplb_location(void); extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE))); @@ -91,6 +90,12 @@ bool menu_is_enabled_enum(void); #define MAX_BOOT_ENTRIES 31 +static inline void panic(const char *string) +{ + sclp_print(string); + disabled_wait(); +} + static inline void fill_hex(char *out, unsigned char val) { const char hex[] = "0123456789abcdef"; diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index aa8fceb..ce51930 100644 --- a/pc-bios/s390-ccw/start.S +++ b/pc-bios/s390-ccw/start.S @@ -47,8 +47,9 @@ memsetxc: */ .globl disabled_wait disabled_wait: - larl %r1,disabled_wait_psw - lpswe 0(%r1) + larl %r1,disabled_wait_psw + lpswe 0(%r1) +1: j 1b /* -- cgit v1.1 From 78182aea78257edc6b03a167cf7159479aa2ae06 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:23 -0400 Subject: pc-bios: s390x: Use ebcdic2ascii table Why should we do conversion of a ebcdic value if we have a handy table where we could look up the ascii value instead? Signed-off-by: Janosch Frank Reviewed-by: David Hildenbrand Reviewed-by: Thomas Huth Message-Id: <20200624075226.92728-10-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/bootmap.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index d13b7cb..9720567 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -328,9 +328,7 @@ static void print_eckd_ldl_msg(ECKD_IPL_mode_t mode) msg[0] = '2'; break; default: - msg[0] = vlbl->LDL_version; - msg[0] &= 0x0f; /* convert EBCDIC */ - msg[0] |= 0x30; /* to ASCII (digit) */ + msg[0] = ebc2asc[vlbl->LDL_version]; msg[1] = '?'; break; } -- cgit v1.1 From 9598c227aaff9f0c2ee7aee5b8013600b71bca15 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 24 Jun 2020 03:52:24 -0400 Subject: pc-bios: s390x: Make u32 ptr check explicit Let's make it a bit more clear that we check the full 64 bits to fit into the 32 we return. Signed-off-by: Janosch Frank Suggested-by: David Hildenbrand Reviewed-by: David Hildenbrand Reviewed-by: Thomas Huth Message-Id: <20200624075226.92728-11-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/helper.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/helper.h b/pc-bios/s390-ccw/helper.h index 32a453b..dfcfea0 100644 --- a/pc-bios/s390-ccw/helper.h +++ b/pc-bios/s390-ccw/helper.h @@ -19,7 +19,7 @@ /* Avoids compiler warnings when casting a pointer to a u32 */ static inline uint32_t ptr2u32(void *ptr) { - IPL_assert((uint64_t)ptr <= 0xffffffff, "ptr2u32: ptr too large"); + IPL_assert((uint64_t)ptr <= 0xffffffffull, "ptr2u32: ptr too large"); return (uint32_t)(uint64_t)ptr; } -- cgit v1.1 From 1c9f655066d1defbe083ef06723be919cdfc13dc Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Tue, 30 Jun 2020 16:17:30 +0200 Subject: pc-bios/s390-ccw: Generate and include dependency files in the Makefile The Makefile of the s390-ccw bios does not handle dependencies of the *.c files from the headers yet, so that you often have to run a "make clean" to get the build right when one of the headers has been changed. Let's make sure that we generate and include dependency files for all *.c files now to avoid this problem in the future. Acked-by: Cornelia Huck Message-Id: <20200630142955.7662-1-thuth@redhat.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/Makefile | 3 +++ pc-bios/s390-ccw/netboot.mak | 13 +++++++------ 2 files changed, 10 insertions(+), 6 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile index a048b6b..50bc880 100644 --- a/pc-bios/s390-ccw/Makefile +++ b/pc-bios/s390-ccw/Makefile @@ -38,5 +38,8 @@ s390-netboot.img: @echo "s390-netboot.img not built since roms/SLOF/ is not available." endif +ALL_OBJS = $(sort $(OBJECTS) $(NETOBJS) $(LIBCOBJS) $(LIBNETOBJS)) +-include $(ALL_OBJS:%.o=%.d) + clean: rm -f *.o *.d *.img *.elf *~ *.a diff --git a/pc-bios/s390-ccw/netboot.mak b/pc-bios/s390-ccw/netboot.mak index 5eefb7c..577c023 100644 --- a/pc-bios/s390-ccw/netboot.mak +++ b/pc-bios/s390-ccw/netboot.mak @@ -1,8 +1,7 @@ SLOF_DIR := $(SRC_PATH)/roms/SLOF -NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o \ - libnet.a libc.a +NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include LIBNET_INC := -I$(SLOF_DIR)/lib/libnet @@ -11,15 +10,16 @@ NETLDFLAGS := $(LDFLAGS) -Ttext=0x7800000 $(NETOBJS): QEMU_CFLAGS += $(LIBC_INC) $(LIBNET_INC) -s390-netboot.elf: $(NETOBJS) - $(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $(NETOBJS),"BUILD","$(TARGET_DIR)$@") +s390-netboot.elf: $(NETOBJS) libnet.a libc.a + $(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $^,"BUILD","$(TARGET_DIR)$@") s390-netboot.img: s390-netboot.elf $(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,"STRIP","$(TARGET_DIR)$@") # libc files: -LIBC_CFLAGS := $(QEMU_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) +LIBC_CFLAGS = $(QEMU_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) \ + -MMD -MP -MT $@ -MF $(@:%.o=%.d) CTYPE_OBJS = isdigit.o isxdigit.o toupper.o %.o : $(SLOF_DIR)/lib/libc/ctype/%.c @@ -52,7 +52,8 @@ libc.a: $(LIBCOBJS) LIBNETOBJS := args.o dhcp.o dns.o icmpv6.o ipv6.o tcp.o udp.o bootp.o \ dhcpv6.o ethernet.o ipv4.o ndp.o tftp.o pxelinux.o -LIBNETCFLAGS := $(QEMU_CFLAGS) $(CFLAGS) -DDHCPARCH=0x1F $(LIBC_INC) $(LIBNET_INC) +LIBNETCFLAGS = $(QEMU_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) \ + -DDHCPARCH=0x1F -MMD -MP -MT $@ -MF $(@:%.o=%.d) %.o : $(SLOF_DIR)/lib/libnet/%.c $(call quiet-command,$(CC) $(LIBNETCFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@") -- cgit v1.1 From b71db6b9abb5af302c9669c133d78115c6437c45 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Thu, 2 Jul 2020 11:51:31 +0200 Subject: pc-bios/s390: Update s390-ccw bios binaries with the latest changes ... to make sure that the binaries match the current state of the sources. Signed-off-by: Thomas Huth --- pc-bios/s390-ccw.img | Bin 42608 -> 42608 bytes pc-bios/s390-netboot.img | Bin 67232 -> 67232 bytes 2 files changed, 0 insertions(+), 0 deletions(-) (limited to 'pc-bios') diff --git a/pc-bios/s390-ccw.img b/pc-bios/s390-ccw.img index b9da9d8..3074686 100644 Binary files a/pc-bios/s390-ccw.img and b/pc-bios/s390-ccw.img differ diff --git a/pc-bios/s390-netboot.img b/pc-bios/s390-netboot.img index 6bb5c86..d9c3196 100644 Binary files a/pc-bios/s390-netboot.img and b/pc-bios/s390-netboot.img differ -- cgit v1.1