Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7327
-gerrit
commit eff094f36fd4b760246bf89c3019c65e4abb86f3 Author: Vladimir Serbinenko phcoder@gmail.com Date: Tue Nov 4 21:10:59 2014 +0100
haswell: Move to implicit length patching
Change-Id: I662ba2a08f9a176a84b8318c8004aa5db7239567 Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/cpu/intel/haswell/acpi.c | 112 +++++++++++++++------------------- src/southbridge/intel/lynxpoint/lpc.c | 8 +-- 2 files changed, 52 insertions(+), 68 deletions(-)
diff --git a/src/cpu/intel/haswell/acpi.c b/src/cpu/intel/haswell/acpi.c index 544436f..6323d27 100644 --- a/src/cpu/intel/haswell/acpi.c +++ b/src/cpu/intel/haswell/acpi.c @@ -50,10 +50,10 @@ static int get_cores_per_package(void) return cores; }
-static int generate_cstate_entries(acpi_cstate_t *cstates, +static void generate_cstate_entries(acpi_cstate_t *cstates, int c1, int c2, int c3) { - int length, cstate_count = 0; + int cstate_count = 0;
/* Count number of active C-states */ if (c1 > 0) @@ -63,74 +63,70 @@ static int generate_cstate_entries(acpi_cstate_t *cstates, if (c3 > 0) ++cstate_count; if (!cstate_count) - return 0; + return;
- length = acpigen_write_package(cstate_count + 1); - length += acpigen_write_byte(cstate_count); + acpigen_write_package(cstate_count + 1); + acpigen_write_byte(cstate_count);
/* Add an entry if the level is enabled */ if (c1 > 0) { cstates[c1].ctype = 1; - length += acpigen_write_CST_package_entry(&cstates[c1]); + acpigen_write_CST_package_entry(&cstates[c1]); } if (c2 > 0) { cstates[c2].ctype = 2; - length += acpigen_write_CST_package_entry(&cstates[c2]); + acpigen_write_CST_package_entry(&cstates[c2]); } if (c3 > 0) { cstates[c3].ctype = 3; - length += acpigen_write_CST_package_entry(&cstates[c3]); + acpigen_write_CST_package_entry(&cstates[c3]); }
- acpigen_patch_len(length - 1); - return length; + acpigen_pop_len(); }
-static int generate_C_state_entries(void) +static void generate_C_state_entries(void) { struct cpu_info *info; struct cpu_driver *cpu; - int len, lenif; struct device *lapic; struct cpu_intel_haswell_config *conf = NULL;
/* Find the SpeedStep CPU in the device tree using magic APIC ID */ lapic = dev_find_lapic(SPEEDSTEP_APIC_MAGIC); if (!lapic) - return 0; + return; conf = lapic->chip_info; if (!conf) - return 0; + return;
/* Find CPU map of supported C-states */ info = cpu_info(); if (!info) - return 0; + return; cpu = find_cpu_driver(info->cpu); if (!cpu || !cpu->cstates) - return 0; + return;
- len = acpigen_emit_byte(0x14); /* MethodOp */ - len += acpigen_write_len_f(); /* PkgLength */ - len += acpigen_emit_namestring("_CST"); - len += acpigen_emit_byte(0x00); /* No Arguments */ + acpigen_emit_byte(0x14); /* MethodOp */ + acpigen_write_len_f(); /* PkgLength */ + acpigen_emit_namestring("_CST"); + acpigen_emit_byte(0x00); /* No Arguments */
/* If running on AC power */ - len += acpigen_emit_byte(0xa0); /* IfOp */ - lenif = acpigen_write_len_f(); /* PkgLength */ - lenif += acpigen_emit_namestring("PWRS"); - lenif += acpigen_emit_byte(0xa4); /* ReturnOp */ - lenif += generate_cstate_entries(cpu->cstates, conf->c1_acpower, + acpigen_emit_byte(0xa0); /* IfOp */ + acpigen_write_len_f(); /* PkgLength */ + acpigen_emit_namestring("PWRS"); + acpigen_emit_byte(0xa4); /* ReturnOp */ + generate_cstate_entries(cpu->cstates, conf->c1_acpower, conf->c2_acpower, conf->c3_acpower); - acpigen_patch_len(lenif - 1); - len += lenif; + acpigen_pop_len();
/* Else on battery power */ - len += acpigen_emit_byte(0xa4); /* ReturnOp */ - len += generate_cstate_entries(cpu->cstates, conf->c1_battery, + acpigen_emit_byte(0xa4); /* ReturnOp */ + generate_cstate_entries(cpu->cstates, conf->c1_battery, conf->c2_battery, conf->c3_battery); - acpigen_patch_len(len - 1); - return len; + acpigen_pop_len(); }
static acpi_tstate_t tss_table_fine[] = { @@ -162,31 +158,27 @@ static acpi_tstate_t tss_table_coarse[] = { { 13, 125, 0, 0x19, 0 }, };
-static int generate_T_state_entries(int core, int cores_per_package) +static void generate_T_state_entries(int core, int cores_per_package) { - int len; - /* Indicate SW_ALL coordination for T-states */ - len = acpigen_write_TSD_package(core, cores_per_package, SW_ALL); + acpigen_write_TSD_package(core, cores_per_package, SW_ALL);
/* Indicate FFixedHW so OS will use MSR */ - len += acpigen_write_empty_PTC(); + acpigen_write_empty_PTC();
/* Set a T-state limit that can be modified in NVS */ - len += acpigen_write_TPC("\TLVL"); + acpigen_write_TPC("\TLVL");
/* * CPUID.(EAX=6):EAX[5] indicates support * for extended throttle levels. */ if (cpuid_eax(6) & (1 << 5)) - len += acpigen_write_TSS_package( + acpigen_write_TSS_package( ARRAY_SIZE(tss_table_fine), tss_table_fine); else - len += acpigen_write_TSS_package( + acpigen_write_TSS_package( ARRAY_SIZE(tss_table_coarse), tss_table_coarse); - - return len; }
static int calculate_power(int tdp, int p1_ratio, int ratio) @@ -210,9 +202,8 @@ static int calculate_power(int tdp, int p1_ratio, int ratio) return (int)power; }
-static int generate_P_state_entries(int core, int cores_per_package) +static void generate_P_state_entries(int core, int cores_per_package) { - int len, len_pss; int ratio_min, ratio_max, ratio_turbo, ratio_step; int coord_type, power_max, power_unit, num_entries; int ratio, power, clock, clock_max; @@ -247,16 +238,16 @@ static int generate_P_state_entries(int core, int cores_per_package) power_max = ((msr.lo & 0x7fff) / power_unit) * 1000;
/* Write _PCT indicating use of FFixedHW */ - len = acpigen_write_empty_PCT(); + acpigen_write_empty_PCT();
/* Write _PPC with no limit on supported P-state */ - len += acpigen_write_PPC_NVS(); + acpigen_write_PPC_NVS();
/* Write PSD indicating configured coordination type */ - len += acpigen_write_PSD_package(core, 1, coord_type); + acpigen_write_PSD_package(core, 1, coord_type);
/* Add P-state entries in _PSS table */ - len += acpigen_write_name("_PSS"); + acpigen_write_name("_PSS");
/* Determine ratio points */ ratio_step = PSS_RATIO_STEP; @@ -269,13 +260,13 @@ static int generate_P_state_entries(int core, int cores_per_package) /* P[T] is Turbo state if enabled */ if (get_turbo_state() == TURBO_ENABLED) { /* _PSS package count including Turbo */ - len_pss = acpigen_write_package(num_entries + 2); + acpigen_write_package(num_entries + 2);
msr = rdmsr(MSR_TURBO_RATIO_LIMIT); ratio_turbo = msr.lo & 0xff;
/* Add entry for Turbo ratio */ - len_pss += acpigen_write_PSS_package( + acpigen_write_PSS_package( clock_max + 1, /*MHz*/ power_max, /*mW*/ PSS_LATENCY_TRANSITION, /*lat1*/ @@ -284,11 +275,11 @@ static int generate_P_state_entries(int core, int cores_per_package) ratio_turbo << 8); /*status*/ } else { /* _PSS package count without Turbo */ - len_pss = acpigen_write_package(num_entries + 1); + acpigen_write_package(num_entries + 1); }
/* First regular entry is max non-turbo ratio */ - len_pss += acpigen_write_PSS_package( + acpigen_write_PSS_package( clock_max, /*MHz*/ power_max, /*mW*/ PSS_LATENCY_TRANSITION, /*lat1*/ @@ -304,7 +295,7 @@ static int generate_P_state_entries(int core, int cores_per_package) power = calculate_power(power_max, ratio_max, ratio); clock = ratio * HASWELL_BCLK;
- len_pss += acpigen_write_PSS_package( + acpigen_write_PSS_package( clock, /*MHz*/ power, /*mW*/ PSS_LATENCY_TRANSITION, /*lat1*/ @@ -314,15 +305,11 @@ static int generate_P_state_entries(int core, int cores_per_package) }
/* Fix package length */ - len_pss--; - acpigen_patch_len(len_pss); - - return len + len_pss; + acpigen_pop_len(); }
void generate_cpu_entries(void) { - int len_pr; int coreID, cpuID, pcontrol_blk = get_pmbase(), plen = 6; int totalcores = dev_count_cpu(); int cores_per_package = get_cores_per_package(); @@ -339,23 +326,22 @@ void generate_cpu_entries(void) }
/* Generate processor _PR.CPUx */ - len_pr = acpigen_write_processor( + acpigen_write_processor( (cpuID-1)*cores_per_package+coreID-1, pcontrol_blk, plen);
/* Generate P-state tables */ - len_pr += generate_P_state_entries( + generate_P_state_entries( coreID-1, cores_per_package);
/* Generate C-state tables */ - len_pr += generate_C_state_entries(); + generate_C_state_entries();
/* Generate T-state tables */ - len_pr += generate_T_state_entries( + generate_T_state_entries( cpuID-1, cores_per_package);
- len_pr--; - acpigen_patch_len(len_pr); + acpigen_pop_len(); } } } diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c index a202424..563cb0a 100644 --- a/src/southbridge/intel/lynxpoint/lpc.c +++ b/src/southbridge/intel/lynxpoint/lpc.c @@ -755,8 +755,6 @@ static void southbridge_inject_dsdt(void) }
if (gnvs) { - int scopelen; - acpi_create_gnvs(gnvs);
gnvs->apic = 1; @@ -775,9 +773,9 @@ static void southbridge_inject_dsdt(void) smm_setup_structures(gnvs, NULL, NULL);
/* Add it to DSDT. */ - scopelen = acpigen_write_scope("\"); - scopelen += acpigen_write_name_dword("NVSA", (u32) gnvs); - acpigen_patch_len(scopelen - 1); + acpigen_write_scope("\"); + acpigen_write_name_dword("NVSA", (u32) gnvs); + acpigen_pop_len(); } }