{"id":104243,"date":"2022-06-05T15:36:39","date_gmt":"2022-06-05T13:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-coreboot-4-17"},"modified":"2022-06-05T15:36:39","modified_gmt":"2022-06-05T13:36:39","slug":"vypusk-coreboot-4-17","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-coreboot-4-17","title":{"rendered":"Lan\u00e7amento do Coreboot 4.17","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o projeto CoreBoot 4.17, que oferece uma alternativa livre para firmware e BIOS propriet\u00e1rios. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a GPLv2. A nova vers\u00e3o foi desenvolvida por 150 programadores, que implementaram mais de 1300 altera\u00e7\u00f5es.       <\/p>\n<p>Principais mudan\u00e7as:   <\/p>\n<ul>\n<li class=\"l\"> Foi corrigida uma vulnerabilidade (CVE-2022-29264) que afeta as vers\u00f5es do CoreBoot de 4.13 a 4.16, permitindo que, em sistemas com AP (Processador de Aplica\u00e7\u00f5es), seja executado c\u00f3digo no n\u00edvel SMM (Modo de Gerenciamento de Sistema), que possui prioridade maior (Anel -2) que o modo hipervisor e o anel zero de prote\u00e7\u00e3o, tendo acesso irrestrito a toda a mem\u00f3ria. O problema foi causado por uma chamada incorreta do manipulador SMI no m\u00f3dulo smm_module_loader.\n<li class=\"l\"> Adicionada a compatibilidade com 12 placas-m\u00e3e, 5 das quais s\u00e3o usadas em dispositivos com Chrome OS ou em <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/dts-gdansk\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4540\">servidores<\/a> Google. Entre as placas n\u00e3o relacionadas ao Google est\u00e3o:\n<ul>\n<li class=\"l\"> Clevo L140MU \/ L141MU \/ L142MU\n<li class=\"l\"> Dell Precision T1650\n<li class=\"l\">  Esta\u00e7\u00e3o de Trabalho HP Z220 CMT\n<li class=\"l\">  Star Labs LabTop Mk III (i7-8550u), LabTop Mk IV (i3-10110U, i7-10710U), Lite Mk III (N5000) e Lite Mk IV (N5030).  <\/ul>\n<li class=\"l\"> O suporte para as placas-m\u00e3e Google Deltan e Deltaur foi encerrado.\n<li class=\"l\"> Adicionado um novo payload coreDOOM, que permite executar o jogo DOOM a partir do Coreboot. O projeto utiliza o c\u00f3digo doomgeneric, portado para libpayload. Um framebuffer linear do Coreboot \u00e9 usado para a sa\u00edda, e os arquivos WAD com os recursos do jogo s\u00e3o carregados a partir do CBFS.\n<li class=\"l\"> As componentes do payload foram atualizadas para SeaBIOS 1.16.0 e iPXE 2022.1.\n<li class=\"l\"> Adicionado o modo SeaGRUB (GRUB2 sobre o SeaBIOS), que permite ao GRUB2 utilizar chamadas de retorno fornecidas pelo SeaBIOS, por exemplo, para acessar hardware ao qual o payload do GRUB2 n\u00e3o tem acesso.\n<li class=\"l\"> Adicionada prote\u00e7\u00e3o contra o ataque SinkHole, que permite a execu\u00e7\u00e3o de c\u00f3digo no n\u00edvel SMM (Modo de Gerenciamento de Sistema).\n<li class=\"l\"> Implementada uma capacidade embutida para gerar tabelas de p\u00e1ginas de mem\u00f3ria est\u00e1ticas a partir de arquivos assembly, sem a necessidade de chamar utilit\u00e1rios externos.\n<li class=\"l\"> A grava\u00e7\u00e3o de informa\u00e7\u00f5es de depura\u00e7\u00e3o foi permitida no console CBMEMC a partir dos manipuladores SMI ao utilizar DEBUG_SMI.\n<li class=\"l\"> O sistema de manipuladores de inicializa\u00e7\u00e3o CBMEM foi alterado. Em vez dos manipuladores vinculados \u00e0s etapas *_CBMEM_INIT_HOOK, foram propostos dois manipuladores CBMEM_CREATION_HOOK (usado na fase inicial que cria o cbmem) e CBMEM_READY_HOOK (usado em qualquer est\u00e1gio em que o cbmem j\u00e1 foi criado).\n<li class=\"l\"> Adicionada a compatibilidade com PSB (Platform Secure Boot), ativada pelo processador PSP (Platform Security Processor) para verificar a integridade do BIOS por meio de assinatura digital.\n<li class=\"l\"> Adicionada uma implementa\u00e7\u00e3o pr\u00f3pria do manipulador de dados de depura\u00e7\u00e3o, transmitida a partir do FSP (FSP Debug Handler).\n<li class=\"l\"> Adicionadas fun\u00e7\u00f5es espec\u00edficas para fabricantes do TIS (Especifica\u00e7\u00e3o de Interface TPM) para leitura e grava\u00e7\u00e3o diretamente dos registradores TPM (M\u00f3dulo de Plataforma Confi\u00e1vel) \u2014 tis_vendor_read() e tis_vendor_write().\n<li class=\"l\"> Suporte adicionado para intercepta\u00e7\u00e3o de desrefer\u00eancias de ponteiros nulos atrav\u00e9s de registros de depura\u00e7\u00e3o.\n<li class=\"l\"> Implementa\u00e7\u00e3o de detec\u00e7\u00e3o de dispositivos i2c, facilitando o trabalho com placas equipadas com touchpads ou telas sens\u00edveis ao toque de diferentes fabricantes.\n<li class=\"l\"> Adicionada a capacidade de salvar dados de tempo em um formato adequado para a gera\u00e7\u00e3o de gr\u00e1ficos FlameGraph, demonstrando visualmente quanto tempo \u00e9 gasto em diferentes etapas de inicializa\u00e7\u00e3o.\n<li class=\"l\"> A utilidade cbmem agora possui uma op\u00e7\u00e3o para adicionar \u00e0 tabela cbmem &#171;timestamp&#187; o hor\u00e1rio do espa\u00e7o do usu\u00e1rio, permitindo refletir no cbmem eventos em est\u00e1gios realizados ap\u00f3s o CoreBoot.      <\/ul>\n<p>Adicionalmente, destaca-se a publica\u00e7\u00e3o de uma carta aberta pela OSFF (Open-Source Firmware Foundation) \u00e0 Intel, propondo tornar os pacotes de suporte de firmware (FSP, Firmware Support Package) mais modulares e come\u00e7ar a publicar documenta\u00e7\u00e3o relacionada \u00e0 inicializa\u00e7\u00e3o do SoC Intel. A aus\u00eancia do c\u00f3digo FSP dificulta significativamente a cria\u00e7\u00e3o de firmwares abertos e prejudica o avan\u00e7o dos projetos Coreboot, U-Boot e LinuxBoot em hardware Intel. Uma iniciativa semelhante anterior foi bem-sucedida e a Intel abriu o c\u00f3digo de firmwares do bloco PSE (Programmable Services Engine) solicitados pela comunidade.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57303\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 CoreBoot 4.17, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u0430\u044f \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u0430 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u044b\u043c \u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u043c \u0438 BIOS. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u0412 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043f\u0440\u0438\u043d\u044f\u043b\u043e \u0443\u0447\u0430\u0441\u0442\u0438\u0435 150 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 1300 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0423\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-29264), \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0449\u0430\u044f\u0441\u044f \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 CoreBoot \u0441 4.13 \u043f\u043e 4.16 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 AP (Application Processor) [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104243","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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