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headergen_v2: add floating instances and nochild flag

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Floating instances don't have an address and will only generate
child nodes and registers with offsets. The 'nochild' flag will
disable generating the children for a node but will generate the
node's own address, which can be used to generate base addresses.

Change-Id: Ib1014de94531436d5708db46aa684741e7740ace
This commit is contained in:
Aidan MacDonald 2025-01-27 00:58:11 +00:00 • committed by Solomon Peachy
parent 0f5c2877fe
commit 387f67cab6
5 changed files with 109 additions and 25 deletions
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8
utils/regtools/include/soc_desc.hpp
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@ -230,7 +230,8 @@ struct instance_t
enum type_t
{
SINGLE, /** There is a single instance at a specified address */
RANGE /** There are multiple addresses forming a range */
RANGE, /** There are multiple addresses forming a range */
FLOATING, /** Instance generates child register offsets/fields only */
};
soc_id_t id; /** ID (must be unique among node instances) */
@ -240,9 +241,10 @@ struct instance_t
type_t type; /** Instance type */
soc_word_t addr; /** Address (for SINGLE) */
range_t range; /** Range (for RANGE) */
bool nochild; /** Disable child node generation if set */
/** Default constructor: single instance at 0 */
instance_t():id(DEFAULT_ID), type(SINGLE), addr(0) {}
instance_t():id(DEFAULT_ID), type(SINGLE), addr(0), nochild(false) {}
};
/** Node information */
@ -544,6 +546,8 @@ public:
node_inst_t child(const std::string& name, size_t index) const;
/** Returns a list of all instances of subnodes of this node's instance */
std::vector< node_inst_t > children() const;
/** Check if the instance's nochild flag is set */
bool is_nochild() const;
/** Returns the name of the instance */
std::string name() const;
/** Checks whether this instance is indexed */