coreboot: rename from NeKernel firmware, refactor symbols to `cb_`, update docs

This patch completes a major renaming and cleanup of the firmware codebase:

- Rename project from "NeKernel Firmware" to "CoreBoot" in README and comments.
- Replace all `mp_`-prefixed symbols with `cb_` to reflect the new naming scheme.
- Remove obsolete SPECIFICATION.TXT and replace with SPECIFICATION_FIRMWARE.md.
- Update memory-mapped I/O helpers, TLB init, and platform-specific code to match `cb_*` naming.
- Refactor low-level UART, panic, PCI-tree, partition map, and context setup to use unified `cb_` API.
- Adjust linker scripts and boot vectors for ARM64, PPC64, and RV64 targets accordingly.
- Add Doxygen documentation note to README.

This change is part of an ongoing effort to rebrand and unify the firmware interface, improve naming clarity, and better align with platform-specific toolchains.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

2 files changed, 6 insertions, 6 deletions

diff --git a/libfdt/libfdt.h b/libfdt/libfdt.h
index 5ed9144..3a42602 100644
--- a/libfdt/libfdt.h
+++ b/libfdt/libfdt.h
@@ -47,7 +47,7 @@ struct fdt_header
 	fdt32_t off_dt_strings;	   /* offset to strings */
 	fdt32_t off_mem_rsvmap;	   /* offset to memory reserve map */
 	fdt32_t version;		   /* format version */
-	fdt32_t last_comp_version; /* last compatible version */
+	fdt32_t last_cocb_version; /* last compatible version */
 
 	/* version 2 fields below */
 	fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
@@ -163,7 +163,7 @@ int fdt_next_subnode(const void* fdt, int offset);
 #define fdt_off_dt_strings(fdt)	   (fdt_get_header(fdt, off_dt_strings))
 #define fdt_off_mem_rsvmap(fdt)	   (fdt_get_header(fdt, off_mem_rsvmap))
 #define fdt_version(fdt)		   (fdt_get_header(fdt, version))
-#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
+#define fdt_last_cocb_version(fdt) (fdt_get_header(fdt, last_cocb_version))
 #define fdt_boot_cpuid_phys(fdt)   (fdt_get_header(fdt, boot_cpuid_phys))
 #define fdt_size_dt_strings(fdt)   (fdt_get_header(fdt, size_dt_strings))
 #define fdt_size_dt_struct(fdt)	   (fdt_get_header(fdt, size_dt_struct))
@@ -181,7 +181,7 @@ fdt_set_hdr_(off_dt_struct);
 fdt_set_hdr_(off_dt_strings);
 fdt_set_hdr_(off_mem_rsvmap);
 fdt_set_hdr_(version);
-fdt_set_hdr_(last_comp_version);
+fdt_set_hdr_(last_cocb_version);
 fdt_set_hdr_(boot_cpuid_phys);
 fdt_set_hdr_(size_dt_strings);
 fdt_set_hdr_(size_dt_struct);
diff --git a/libfdt/libfdt_strerror.c b/libfdt/libfdt_strerror.c
index 4002afc..0225f5e 100644
--- a/libfdt/libfdt_strerror.c
+++ b/libfdt/libfdt_strerror.c
@@ -22,7 +22,7 @@ struct fdt_err
 		.e_str = #VAL, \
 	}
 
-static struct fdt_err mp_fdtErrTbl[] = {
+static struct fdt_err cb_fdtErrTbl[] = {
 	fdt_error(FDT_ERR_NOTFOUND),
 	fdt_error(FDT_ERR_EXISTS),
 	fdt_error(FDT_ERR_NOSPACE),
@@ -46,7 +46,7 @@ static struct fdt_err mp_fdtErrTbl[] = {
 	fdt_error(FDT_ERR_ALIGNMENT),
 };
 
-#define fdt_error_length() mpux_array_size(mp_fdtErrTbl)
+#define fdt_error_length() mpux_array_size(cb_fdtErrTbl)
 
 /// @brief Returns the error value as a string.
 /// @param errval
@@ -63,7 +63,7 @@ const char* fdt_strerror(int32_t errval)
 	}
 	else if (-errval < fdt_error_length())
 	{
-		const char* serr = mp_fdtErrTbl[errval].e_str;
+		const char* serr = cb_fdtErrTbl[errval].e_str;
 
 		if (serr != null)
 		{