From 5838b447f675444b154bacd205ebf9f47d003b2f Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Wed, 6 Jun 2012 18:06:48 -0400 Subject: Rework linker scripts. Having separate linker scripts for all the boards is a bad idea. Most boards really only need to specify MEMORY and the appropriate REGION_ALIASES() so that support/ld/common.inc can do its work. Not having infrastructure for this leads to duplication -- viz. the Maple Mini linker scripts are identical to the Maple's, and the olimex_stm32_h103 linker directory is just a symlink to Maple's. Clearly, the current structure is wrong. To fix it, instead of having per-board subdirectories of support/ld/, add per-MEMORY subdirectories of (new) support/ld/stm32/mem/. The per-board .mk files under support/mk/board-includes/ now reference these directly, and target-config.mk and the Makefile handle this appropriately. We move some other stuff around in target-config.mk to make this all more convenient, and even allow more overriding of the libmaple defaults on a per-board basis. Custom board hacks will be easier now. Unfortunately, lots of duplication under support/ld/stm32/mem/ is necessary, as the LENGTH attribute in a MEMORY region specification doesn't support arithmetic expressions, and ld doesn't seem to have any way to specify MEMORY at the command line (why?!). If we find a better way than this, we should do it. If a board (e.g. Maple Native) _does_ really need special memory-related configuration, you can always put a per-board subdirectory of support/ld/stm32/mem. We do this here to configure the heap. Signed-off-by: Marti Bolivar --- support/ld/maple_RET6/flash.ld | 18 ------------------ support/ld/maple_RET6/jtag.ld | 18 ------------------ support/ld/maple_RET6/ram.ld | 17 ----------------- 3 files changed, 53 deletions(-) delete mode 100644 support/ld/maple_RET6/flash.ld delete mode 100644 support/ld/maple_RET6/jtag.ld delete mode 100644 support/ld/maple_RET6/ram.ld (limited to 'support/ld/maple_RET6') diff --git a/support/ld/maple_RET6/flash.ld b/support/ld/maple_RET6/flash.ld deleted file mode 100644 index 8b529f8..0000000 --- a/support/ld/maple_RET6/flash.ld +++ /dev/null @@ -1,18 +0,0 @@ -/* - * Maple RET6 Edition (STM32F103RET6, high density) linker script for - * Flash builds. - */ - -MEMORY -{ - ram (rwx) : ORIGIN = 0x20000C00, LENGTH = 61K - rom (rx) : ORIGIN = 0x08005000, LENGTH = 492K -} - -REGION_ALIAS("REGION_TEXT", rom); -REGION_ALIAS("REGION_DATA", ram); -REGION_ALIAS("REGION_BSS", ram); -REGION_ALIAS("REGION_RODATA", rom); - -_FLASH_BUILD = 1; -INCLUDE common.inc diff --git a/support/ld/maple_RET6/jtag.ld b/support/ld/maple_RET6/jtag.ld deleted file mode 100644 index 4ac9d76..0000000 --- a/support/ld/maple_RET6/jtag.ld +++ /dev/null @@ -1,18 +0,0 @@ -/* - * Maple RET6 Edition (STM32F103RET6, high density) linker script for - * JTAG (bare metal, no bootloader) builds. - */ - -MEMORY -{ - ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K - rom (rx) : ORIGIN = 0x08000000, LENGTH = 512K -} - -REGION_ALIAS("REGION_TEXT", rom); -REGION_ALIAS("REGION_DATA", ram); -REGION_ALIAS("REGION_BSS", ram); -REGION_ALIAS("REGION_RODATA", rom); - -_FLASH_BUILD = 1; -INCLUDE common.inc diff --git a/support/ld/maple_RET6/ram.ld b/support/ld/maple_RET6/ram.ld deleted file mode 100644 index 65c3a2c..0000000 --- a/support/ld/maple_RET6/ram.ld +++ /dev/null @@ -1,17 +0,0 @@ -/* - * Maple RET6 Edition (STM32F103RET6, high density) linker script for - * RAM builds. - */ - -MEMORY -{ - ram (rwx) : ORIGIN = 0x20000C00, LENGTH = 61K - rom (rx) : ORIGIN = 0x08005000, LENGTH = 0K -} - -REGION_ALIAS("REGION_TEXT", ram); -REGION_ALIAS("REGION_DATA", ram); -REGION_ALIAS("REGION_BSS", ram); -REGION_ALIAS("REGION_RODATA", ram); - -INCLUDE common.inc -- cgit v1.2.3