mirror of
https://github.com/dingusdev/dingusppc.git
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Result of running IWYU (https://include-what-you-use.org/) and applying most of the suggestions about unncessary includes and forward declarations. Was motivated by observing that <thread> was being included in ppcopcodes.cpp even though it was unused (found while researching the use of threads), but seems generally good to help with build times and correctness.
148 lines
4.6 KiB
C++
148 lines
4.6 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** Apple/CHRP Open Firmware NVRAM partition definitions. */
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#ifndef OF_NVRAM_H
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#define OF_NVRAM_H
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#include <cinttypes>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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class NVram;
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/** ========== Apple Open Firmware 1.x/2.x partition definitions. ========== */
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#define OF_NVRAM_OFFSET 0x1800
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#define OF_NVRAM_SIG 0x1275
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#define OF_CFG_SIZE 0x800
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// OF Variable types
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enum {
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OF_VAR_TYPE_INT = 1, // integer
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OF_VAR_TYPE_STR = 2, // string
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OF_VAR_TYPE_FLG = 3, // boolean flag
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};
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typedef struct {
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uint16_t sig; // >nv.1275 partition signature (= 0x1275)
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uint8_t version; // >nv.version header version (= 5)
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uint8_t num_pages; // >nv.pages number of memory pages (= 8 pages 0x100 bytes each)
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uint16_t checksum; // >nv.checksum partition checksum
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uint16_t here; // >nv.here offset to the next free byte (offset of after last string length; = 0x185c)
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uint16_t top; // >nv.top offset to the last free byte (offset of string with lowest offset; < 0x2000)
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} OfConfigHdrAppl;
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/** ================== CHRP NVRAM partition definitions. ================== */
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/** CHRP NVRAM partition signatures. */
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enum {
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NVRAM_SIG_OF_CFG = 0x50, // of-config (unused in Power Macintosh)
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NVRAM_SIG_VPD = 0x52, // of-vpd (unused in Power Macintosh)
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NVRAM_SIG_DIAG = 0x5F, // diagnostics partition
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NVRAM_SIG_OF_ENV = 0x70, // common partition with OF environment vars
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NVRAM_SIG_ERR_LOG = 0x72, // post-err-log
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NVRAM_SIG_FREE = 0x7F, // free space
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NVRAM_SIG_MAC_OS = 0xA0, // APL,MacOS75
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};
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typedef struct {
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uint8_t sig; // partition signature, must be 0x70
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uint8_t checksum; // partition header checksum (sig, length & name)
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uint16_t length; // partition length in 16-byte blocks
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char name[12]; // null-terminated partition name
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} OfConfigHdrChrp;
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// - interface
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class OfConfigImpl {
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public:
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using config_dict = std::vector<std::pair<std::string, std::string>>;
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virtual ~OfConfigImpl() = default;
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virtual bool validate() = 0;
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virtual const config_dict& get_config_vars() = 0;
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virtual bool set_var(std::string& name, std::string& val) = 0;
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};
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// Old World implementation
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class OfConfigAppl : public OfConfigImpl {
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public:
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OfConfigAppl(NVram* nvram_obj) { this->nvram_obj = nvram_obj; };
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~OfConfigAppl() = default;
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bool validate();
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const config_dict& get_config_vars();
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bool set_var(std::string& var_name, std::string& value);
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protected:
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uint16_t checksum_partition();
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void update_partition();
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private:
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NVram* nvram_obj = nullptr;
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uint8_t buf[OF_CFG_SIZE];
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int size = 0;
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config_dict _config_vars;
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};
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// New World implementation
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class OfConfigChrp : public OfConfigImpl {
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public:
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OfConfigChrp(NVram* nvram_obj) { this->nvram_obj = nvram_obj; };
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~OfConfigChrp() = default;
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bool validate();
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const config_dict& get_config_vars();
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bool set_var(std::string& var_name, std::string& value);
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protected:
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uint8_t checksum_hdr(const uint8_t* data);
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bool update_partition();
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private:
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NVram* nvram_obj = nullptr;
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uint8_t buf[4096];
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unsigned data_offset = 0; // offset to the OF config data
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unsigned data_length = 0; // length of the OF config data
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config_dict _config_vars;
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};
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class OfConfigUtils {
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public:
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OfConfigUtils() = default;
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~OfConfigUtils() = default;
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int init();
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void printenv();
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void setenv(std::string var_name, std::string value);
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protected:
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bool open_container();
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private:
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std::unique_ptr<OfConfigImpl> cfg_impl = nullptr;
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NVram* nvram_obj = nullptr;
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};
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#endif // OF_NVRAM_H
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